Inversely proportional means that as one variable (A) decreases, the other variable (B) also decreases. It is used to describe a relationship between two variables where the change in one variable is inversely proportional to the change in the other.
Inversely proportional means that the increase in one thing (in this case, population) is inversely proportional to the increase in another thing (in this case, production). This is represented by the following equation:
P1 x P2 = R1
Where P1 is the population of country A and P2 is the population of country B. R1 is the production of country A.