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Finding the Fourth Proportional to 125,601.40, 188,402.10 and 75,737.80

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Solution

The fourth proportional to 125,601.40, 188,402.10 and 75,737.80 is: 113,606.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,601.40 : 188,402.10 = 75,737.80 : x
  2. Step 2: Convert to fraction form
    125,601.40/188,402.10 = 75,737.80/x
  3. Step 3: Cross multiply
    125,601.40x = 188,402.10 × 75,737.80
  4. Step 4: Simplify right side
    125,601.40x = 14,269,160,569.38
  5. Step 5: Solve for x
    x = 14,269,160,569.38/125,601.40
  6. Step 6: Final answer
    x = 113,606.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.