proportion

(n) - A proportion is the relationship in size, amount, importance etc, between two things, or a part of a number or amount, considered in relation to the whole.
*This word can also be used as a verb.

• Synonyms: relative amount, ratio, relationship, dimension, division, scale, scope, relative size
• Etymology: Late 14th Century Latin, from pro meaning "forward" +  *partio meaning "division," which comes from pars meaning "part."
• Morphology: proportional - adj, proportionally - adv
• Example: The rewards you get in your education are in direct proportion to the effort you put in.