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Finding the Fourth Proportional to 125,978.27, 173,849.96 and 69,389.64

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Solution

The fourth proportional to 125,978.27, 173,849.96 and 69,389.64 is: 95,757.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,978.27 : 173,849.96 = 69,389.64 : x
  2. Step 2: Convert to fraction form
    125,978.27/173,849.96 = 69,389.64/x
  3. Step 3: Cross multiply
    125,978.27x = 173,849.96 × 69,389.64
  4. Step 4: Simplify right side
    125,978.27x = 12,063,385,791.47
  5. Step 5: Solve for x
    x = 12,063,385,791.47/125,978.27
  6. Step 6: Final answer
    x = 95,757.68

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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.