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Finding the Fourth Proportional to 125,163.47, 187,868.56 and 89,179.90

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Solution

The fourth proportional to 125,163.47, 187,868.56 and 89,179.90 is: 133,857.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,163.47 : 187,868.56 = 89,179.90 : x
  2. Step 2: Convert to fraction form
    125,163.47/187,868.56 = 89,179.90/x
  3. Step 3: Cross multiply
    125,163.47x = 187,868.56 × 89,179.90
  4. Step 4: Simplify right side
    125,163.47x = 16,754,099,393.94
  5. Step 5: Solve for x
    x = 16,754,099,393.94/125,163.47
  6. Step 6: Final answer
    x = 133,857.74

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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.