Home / 129,481.32-194,175-45,217.88

Finding the Fourth Proportional to 129,481.32, 194,175 and 45,217.88

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Solution

The fourth proportional to 129,481.32, 194,175 and 45,217.88 is: 67,810.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,481.32 : 194,175 = 45,217.88 : x
  2. Step 2: Convert to fraction form
    129,481.32/194,175 = 45,217.88/x
  3. Step 3: Cross multiply
    129,481.32x = 194,175 × 45,217.88
  4. Step 4: Simplify right side
    129,481.32x = 8,780,181,849
  5. Step 5: Solve for x
    x = 8,780,181,849/129,481.32
  6. Step 6: Final answer
    x = 67,810.41

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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.