A certain medicine is given in an amount proportion to a patient's body weight. Suppose a patient weighing 132 pounds requires 143 milligrams of medicine. What is the amount of medicine required by a patient weighing 156 pounds?

169 mg

Step-by-step explanation:

The ratio of medicine quantity to body weight is the same for both patients, so ...

amount / (156 lb) = (143 mg) / (132 lb)

Multiply by 156 lb:

amount = (143 mg) (156/132) = 169 mg

The patient requires 169 mg of medicine.

160 milligrams ...