Home / 129,467.20-194,200.80-40,747.90

Finding the Fourth Proportional to 129,467.20, 194,200.80 and 40,747.90

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Solution

The fourth proportional to 129,467.20, 194,200.80 and 40,747.90 is: 61,121.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,467.20 : 194,200.80 = 40,747.90 : x
  2. Step 2: Convert to fraction form
    129,467.20/194,200.80 = 40,747.90/x
  3. Step 3: Cross multiply
    129,467.20x = 194,200.80 × 40,747.90
  4. Step 4: Simplify right side
    129,467.20x = 7,913,274,778.32
  5. Step 5: Solve for x
    x = 7,913,274,778.32/129,467.20
  6. Step 6: Final answer
    x = 61,121.85

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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.