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Finding the Fourth Proportional to 125,343.69, 187,922.03 and 75,412.10

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Solution

The fourth proportional to 125,343.69, 187,922.03 and 75,412.10 is: 113,061.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,343.69 : 187,922.03 = 75,412.10 : x
  2. Step 2: Convert to fraction form
    125,343.69/187,922.03 = 75,412.10/x
  3. Step 3: Cross multiply
    125,343.69x = 187,922.03 × 75,412.10
  4. Step 4: Simplify right side
    125,343.69x = 14,171,593,601.89
  5. Step 5: Solve for x
    x = 14,171,593,601.89/125,343.69
  6. Step 6: Final answer
    x = 113,061.88

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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.