Using proportions, it is found that Chidi should order 160 chairs.
A proportion is a fraction of a total amount, and the measures are related using a rule of three. Due to this, relations between variables, either direct or inverse proportional, can be built to find the desired measures in the problem.
For this problem, we have that:
Hence the number of chairs is given by:
8 x 5 x 4 = 160 chairs.
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