Home / 129,617.20-194,310.60-85,265.20

Finding the Fourth Proportional to 129,617.20, 194,310.60 and 85,265.20

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Solution

The fourth proportional to 129,617.20, 194,310.60 and 85,265.20 is: 127,822.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,617.20 : 194,310.60 = 85,265.20 : x
  2. Step 2: Convert to fraction form
    129,617.20/194,310.60 = 85,265.20/x
  3. Step 3: Cross multiply
    129,617.20x = 194,310.60 × 85,265.20
  4. Step 4: Simplify right side
    129,617.20x = 16,567,932,171.12
  5. Step 5: Solve for x
    x = 16,567,932,171.12/129,617.20
  6. Step 6: Final answer
    x = 127,822.02

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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.