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Finding the Fourth Proportional to 120,676.86, 166,542.02 and 69,691.73

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Solution

The fourth proportional to 120,676.86, 166,542.02 and 69,691.73 is: 96,179.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,676.86 : 166,542.02 = 69,691.73 : x
  2. Step 2: Convert to fraction form
    120,676.86/166,542.02 = 69,691.73/x
  3. Step 3: Cross multiply
    120,676.86x = 166,542.02 × 69,691.73
  4. Step 4: Simplify right side
    120,676.86x = 11,606,601,491.49
  5. Step 5: Solve for x
    x = 11,606,601,491.49/120,676.86
  6. Step 6: Final answer
    x = 96,179.18

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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.