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Finding the Fourth Proportional to 92,406.46, 138,843.24 and 88,669.78

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Solution

The fourth proportional to 92,406.46, 138,843.24 and 88,669.78 is: 133,228.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,406.46 : 138,843.24 = 88,669.78 : x
  2. Step 2: Convert to fraction form
    92,406.46/138,843.24 = 88,669.78/x
  3. Step 3: Cross multiply
    92,406.46x = 138,843.24 × 88,669.78
  4. Step 4: Simplify right side
    92,406.46x = 12,311,199,545.29
  5. Step 5: Solve for x
    x = 12,311,199,545.29/92,406.46
  6. Step 6: Final answer
    x = 133,228.78

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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.