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Finding the Fourth Proportional to 119,665.68, 165,166.78 and 74,377.87

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Solution

The fourth proportional to 119,665.68, 165,166.78 and 74,377.87 is: 102,658.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,665.68 : 165,166.78 = 74,377.87 : x
  2. Step 2: Convert to fraction form
    119,665.68/165,166.78 = 74,377.87/x
  3. Step 3: Cross multiply
    119,665.68x = 165,166.78 × 74,377.87
  4. Step 4: Simplify right side
    119,665.68x = 12,284,753,291.16
  5. Step 5: Solve for x
    x = 12,284,753,291.16/119,665.68
  6. Step 6: Final answer
    x = 102,658.95

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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.