What is something that is a hundred times bigger than something else.?

A meter is a hundred times bigger than a centimeter.

-Kevin

I think what you mean is how to denote a quantity in terms of its size relative to a fundamental size.

Here you will need a prefix to add to the quantity to give it its appropriate magnitude:

Same as centi added to metre gives one hundredth of a metre - centimetre, adding hecto to metre will give you hectometre, a quantity that equals 100 metres.

Therefore something that is hundred times bigger than a "thing" is a hecto"thing".

I hope this is what you wanted to know.

human compared to an ant

penny : dollar