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Finding the Fourth Proportional to 125,451.76, 173,123.68 and 74,474.72

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Solution

The fourth proportional to 125,451.76, 173,123.68 and 74,474.72 is: 102,775.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,451.76 : 173,123.68 = 74,474.72 : x
  2. Step 2: Convert to fraction form
    125,451.76/173,123.68 = 74,474.72/x
  3. Step 3: Cross multiply
    125,451.76x = 173,123.68 × 74,474.72
  4. Step 4: Simplify right side
    125,451.76x = 12,893,337,593.37
  5. Step 5: Solve for x
    x = 12,893,337,593.37/125,451.76
  6. Step 6: Final answer
    x = 102,775.26

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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.