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Finding the Fourth Proportional to 100,934.20, 151,231.20 and 79,793.20

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Solution

The fourth proportional to 100,934.20, 151,231.20 and 79,793.20 is: 119,555.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,934.20 : 151,231.20 = 79,793.20 : x
  2. Step 2: Convert to fraction form
    100,934.20/151,231.20 = 79,793.20/x
  3. Step 3: Cross multiply
    100,934.20x = 151,231.20 × 79,793.20
  4. Step 4: Simplify right side
    100,934.20x = 12,067,221,387.84
  5. Step 5: Solve for x
    x = 12,067,221,387.84/100,934.20
  6. Step 6: Final answer
    x = 119,555.33

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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.