1) The taxes were adjusted to be proportionable to income.

2) The amount of time allocated for each task was proportionable to its complexity.

3) The size of the portions was proportionable to the number of guests.

4) The cost of the service was proportionable to the benefits it provided.

5) The length of the presentation was proportionable to the amount of information presented.

6) The energy consumption of the appliances was proportionable to their power rating.

7) The number of staff members hired was proportionable to the size of the event.

8) The size of the car was proportionable to the number of passengers it could carry.

9) The fees charged by the consultant were proportionable to the services rendered.

10) The amount of ingredients used in the recipe was proportionable to the number of servings.