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Finding the Fourth Proportional to 125,262.21, 172,861.45 and 67,901.76

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Solution

The fourth proportional to 125,262.21, 172,861.45 and 67,901.76 is: 93,704.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,262.21 : 172,861.45 = 67,901.76 : x
  2. Step 2: Convert to fraction form
    125,262.21/172,861.45 = 67,901.76/x
  3. Step 3: Cross multiply
    125,262.21x = 172,861.45 × 67,901.76
  4. Step 4: Simplify right side
    125,262.21x = 11,737,595,839.88
  5. Step 5: Solve for x
    x = 11,737,595,839.88/125,262.21
  6. Step 6: Final answer
    x = 93,704.21

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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.