Home / 120,691.38-166,566.40-66,976.76

Finding the Fourth Proportional to 120,691.38, 166,566.40 and 66,976.76

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Solution

The fourth proportional to 120,691.38, 166,566.40 and 66,976.76 is: 92,434.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,691.38 : 166,566.40 = 66,976.76 : x
  2. Step 2: Convert to fraction form
    120,691.38/166,566.40 = 66,976.76/x
  3. Step 3: Cross multiply
    120,691.38x = 166,566.40 × 66,976.76
  4. Step 4: Simplify right side
    120,691.38x = 11,156,077,796.86
  5. Step 5: Solve for x
    x = 11,156,077,796.86/120,691.38
  6. Step 6: Final answer
    x = 92,434.75

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1.5x scale

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.