Finding the Fourth Proportional to 157,760.64, 217,710.08 and 86,140.80
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Solution
The fourth proportional to 157,760.64, 217,710.08 and 86,140.80 is: 118,874.52
Step by Step Solution
- Step 1: Write the proportion equation
157,760.64 : 217,710.08 = 86,140.80 : x - Step 2: Convert to fraction form
157,760.64/217,710.08 = 86,140.80/x - Step 3: Cross multiply
157,760.64x = 217,710.08 × 86,140.80 - Step 4: Simplify right side
157,760.64x = 18,753,720,459.26 - Step 5: Solve for x
x = 18,753,720,459.26/157,760.64 - Step 6: Final answer
x = 118,874.52
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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.