Home / 123,442.20-185,163.30-108,667.80

Finding the Fourth Proportional to 123,442.20, 185,163.30 and 108,667.80

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Solution

The fourth proportional to 123,442.20, 185,163.30 and 108,667.80 is: 163,001.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,442.20 : 185,163.30 = 108,667.80 : x
  2. Step 2: Convert to fraction form
    123,442.20/185,163.30 = 108,667.80/x
  3. Step 3: Cross multiply
    123,442.20x = 185,163.30 × 108,667.80
  4. Step 4: Simplify right side
    123,442.20x = 20,121,288,451.74
  5. Step 5: Solve for x
    x = 20,121,288,451.74/123,442.20
  6. Step 6: Final answer
    x = 163,001.70

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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.