in inverse proportion to... 成反比地

The amount of money people save increases in inverse proportion to the amount they spend.

人们省下的钱和他们花出的钱呈反比上升。

反义：in proportion to... 成正比地

The amount of energy consumed in this factory is in proportion to its number of products.

这家工厂消耗的能源和它生产的产品数量成正比。