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Finding the Fourth Proportional to 125,168.38, 172,731.25 and 67,806.41

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Solution

The fourth proportional to 125,168.38, 172,731.25 and 67,806.41 is: 93,572.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,168.38 : 172,731.25 = 67,806.41 : x
  2. Step 2: Convert to fraction form
    125,168.38/172,731.25 = 67,806.41/x
  3. Step 3: Cross multiply
    125,168.38x = 172,731.25 × 67,806.41
  4. Step 4: Simplify right side
    125,168.38x = 11,712,285,178.41
  5. Step 5: Solve for x
    x = 11,712,285,178.41/125,168.38
  6. Step 6: Final answer
    x = 93,572.24

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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.