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Finding the Fourth Proportional to 157,332.70, 217,124.70 and 89,347.78

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Solution

The fourth proportional to 157,332.70, 217,124.70 and 89,347.78 is: 123,303.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,332.70 : 217,124.70 = 89,347.78 : x
  2. Step 2: Convert to fraction form
    157,332.70/217,124.70 = 89,347.78/x
  3. Step 3: Cross multiply
    157,332.70x = 217,124.70 × 89,347.78
  4. Step 4: Simplify right side
    157,332.70x = 19,399,608,842.54
  5. Step 5: Solve for x
    x = 19,399,608,842.54/157,332.70
  6. Step 6: Final answer
    x = 123,303.10

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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.