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Finding the Fourth Proportional to 125,414.62, 173,060.72 and 74,418.57

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Solution

The fourth proportional to 125,414.62, 173,060.72 and 74,418.57 is: 102,690.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,414.62 : 173,060.72 = 74,418.57 : x
  2. Step 2: Convert to fraction form
    125,414.62/173,060.72 = 74,418.57/x
  3. Step 3: Cross multiply
    125,414.62x = 173,060.72 × 74,418.57
  4. Step 4: Simplify right side
    125,414.62x = 12,878,931,212.55
  5. Step 5: Solve for x
    x = 12,878,931,212.55/125,414.62
  6. Step 6: Final answer
    x = 102,690.83

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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.