Home / 120,540.13-166,481.55-82,233.91

Finding the Fourth Proportional to 120,540.13, 166,481.55 and 82,233.91

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Solution

The fourth proportional to 120,540.13, 166,481.55 and 82,233.91 is: 113,575.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,540.13 : 166,481.55 = 82,233.91 : x
  2. Step 2: Convert to fraction form
    120,540.13/166,481.55 = 82,233.91/x
  3. Step 3: Cross multiply
    120,540.13x = 166,481.55 × 82,233.91
  4. Step 4: Simplify right side
    120,540.13x = 13,690,428,799.36
  5. Step 5: Solve for x
    x = 13,690,428,799.36/120,540.13
  6. Step 6: Final answer
    x = 113,575.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.