Finding the Fourth Proportional to 151,221.60, 208,705.68 and 86,716.08
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Solution
The fourth proportional to 151,221.60, 208,705.68 and 86,716.08 is: 119,679.59
Step by Step Solution
- Step 1: Write the proportion equation
151,221.60 : 208,705.68 = 86,716.08 : x - Step 2: Convert to fraction form
151,221.60/208,705.68 = 86,716.08/x - Step 3: Cross multiply
151,221.60x = 208,705.68 × 86,716.08 - Step 4: Simplify right side
151,221.60x = 18,098,138,443.33 - Step 5: Solve for x
x = 18,098,138,443.33/151,221.60 - Step 6: Final answer
x = 119,679.59
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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.