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Finding the Fourth Proportional to 120,446.70, 180,472.96 and 72,917.73

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Solution

The fourth proportional to 120,446.70, 180,472.96 and 72,917.73 is: 109,257.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,446.70 : 180,472.96 = 72,917.73 : x
  2. Step 2: Convert to fraction form
    120,446.70/180,472.96 = 72,917.73/x
  3. Step 3: Cross multiply
    120,446.70x = 180,472.96 × 72,917.73
  4. Step 4: Simplify right side
    120,446.70x = 13,159,678,204.99
  5. Step 5: Solve for x
    x = 13,159,678,204.99/120,446.70
  6. Step 6: Final answer
    x = 109,257.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.