Home / 129,514.30-178,658.03-107,819.87

Finding the Fourth Proportional to 129,514.30, 178,658.03 and 107,819.87

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Solution

The fourth proportional to 129,514.30, 178,658.03 and 107,819.87 is: 148,731.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,514.30 : 178,658.03 = 107,819.87 : x
  2. Step 2: Convert to fraction form
    129,514.30/178,658.03 = 107,819.87/x
  3. Step 3: Cross multiply
    129,514.30x = 178,658.03 × 107,819.87
  4. Step 4: Simplify right side
    129,514.30x = 19,262,884,945.32
  5. Step 5: Solve for x
    x = 19,262,884,945.32/129,514.30
  6. Step 6: Final answer
    x = 148,731.73

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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.