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Finding the Fourth Proportional to 125,166.88, 172,732.08 and 74,856.16

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Solution

The fourth proportional to 125,166.88, 172,732.08 and 74,856.16 is: 103,302.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,166.88 : 172,732.08 = 74,856.16 : x
  2. Step 2: Convert to fraction form
    125,166.88/172,732.08 = 74,856.16/x
  3. Step 3: Cross multiply
    125,166.88x = 172,732.08 × 74,856.16
  4. Step 4: Simplify right side
    125,166.88x = 12,930,060,217.61
  5. Step 5: Solve for x
    x = 12,930,060,217.61/125,166.88
  6. Step 6: Final answer
    x = 103,302.57

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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.