Finding the Fourth Proportional to 135,412.80, 186,869.76 and 74,158.68
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Solution
The fourth proportional to 135,412.80, 186,869.76 and 74,158.68 is: 102,339.03
Step by Step Solution
- Step 1: Write the proportion equation
135,412.80 : 186,869.76 = 74,158.68 : x - Step 2: Convert to fraction form
135,412.80/186,869.76 = 74,158.68/x - Step 3: Cross multiply
135,412.80x = 186,869.76 × 74,158.68 - Step 4: Simplify right side
135,412.80x = 13,858,014,733.52 - Step 5: Solve for x
x = 13,858,014,733.52/135,412.80 - Step 6: Final answer
x = 102,339.03
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.