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Finding the Fourth Proportional to 125,199.88, 172,792.38 and 71,472.76

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Solution

The fourth proportional to 125,199.88, 172,792.38 and 71,472.76 is: 98,641.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,199.88 : 172,792.38 = 71,472.76 : x
  2. Step 2: Convert to fraction form
    125,199.88/172,792.38 = 71,472.76/x
  3. Step 3: Cross multiply
    125,199.88x = 172,792.38 × 71,472.76
  4. Step 4: Simplify right side
    125,199.88x = 12,349,948,305.57
  5. Step 5: Solve for x
    x = 12,349,948,305.57/125,199.88
  6. Step 6: Final answer
    x = 98,641.85

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1.5x scale

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.