Home / 80,123.52-120,150.21-38,015.61

Finding the Fourth Proportional to 80,123.52, 120,150.21 and 38,015.61

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Solution

The fourth proportional to 80,123.52, 120,150.21 and 38,015.61 is: 57,006.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,123.52 : 120,150.21 = 38,015.61 : x
  2. Step 2: Convert to fraction form
    80,123.52/120,150.21 = 38,015.61/x
  3. Step 3: Cross multiply
    80,123.52x = 120,150.21 × 38,015.61
  4. Step 4: Simplify right side
    80,123.52x = 4,567,583,524.78
  5. Step 5: Solve for x
    x = 4,567,583,524.78/80,123.52
  6. Step 6: Final answer
    x = 57,006.78

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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.