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Finding the Fourth Proportional to 115,957.87, 159,951.12 and 76,666.71

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Solution

The fourth proportional to 115,957.87, 159,951.12 and 76,666.71 is: 105,753.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,957.87 : 159,951.12 = 76,666.71 : x
  2. Step 2: Convert to fraction form
    115,957.87/159,951.12 = 76,666.71/x
  3. Step 3: Cross multiply
    115,957.87x = 159,951.12 × 76,666.71
  4. Step 4: Simplify right side
    115,957.87x = 12,262,926,131.22
  5. Step 5: Solve for x
    x = 12,262,926,131.22/115,957.87
  6. Step 6: Final answer
    x = 105,753.29

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1.5x scale

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.