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Finding the Fourth Proportional to 157,712.95, 217,614.75 and 89,725.95

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Solution

The fourth proportional to 157,712.95, 217,614.75 and 89,725.95 is: 123,805.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,712.95 : 217,614.75 = 89,725.95 : x
  2. Step 2: Convert to fraction form
    157,712.95/217,614.75 = 89,725.95/x
  3. Step 3: Cross multiply
    157,712.95x = 217,614.75 × 89,725.95
  4. Step 4: Simplify right side
    157,712.95x = 19,525,690,177.76
  5. Step 5: Solve for x
    x = 19,525,690,177.76/157,712.95
  6. Step 6: Final answer
    x = 123,805.24

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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.