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Finding the Fourth Proportional to 125,807.68, 173,469.15 and 100,294.11

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Solution

The fourth proportional to 125,807.68, 173,469.15 and 100,294.11 is: 138,289.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,807.68 : 173,469.15 = 100,294.11 : x
  2. Step 2: Convert to fraction form
    125,807.68/173,469.15 = 100,294.11/x
  3. Step 3: Cross multiply
    125,807.68x = 173,469.15 × 100,294.11
  4. Step 4: Simplify right side
    125,807.68x = 17,397,934,011.71
  5. Step 5: Solve for x
    x = 17,397,934,011.71/125,807.68
  6. Step 6: Final answer
    x = 138,289.92

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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.