A "1:100 ratio" means that for every one part of something, there are one hundred parts of another. This can be used in various contexts, such as mixing ingredients, measuring distances, or comparing quantities. For example, if you have a solution with a 1:100 ratio of salt to water, it means there is one unit of salt for every one hundred units of water. In practical terms, this ratio helps simplify calculations and ensures consistency in recipes or experiments. Understanding ratios like 1:100 is essential in fields such as cooking, chemistry, and finance, where precise measurements are crucial for desired outcomes.