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Finding the Fourth Proportional to 133,046.68, 199,838.62 and 79,839.70

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Solution

The fourth proportional to 133,046.68, 199,838.62 and 79,839.70 is: 119,920.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,046.68 : 199,838.62 = 79,839.70 : x
  2. Step 2: Convert to fraction form
    133,046.68/199,838.62 = 79,839.70/x
  3. Step 3: Cross multiply
    133,046.68x = 199,838.62 × 79,839.70
  4. Step 4: Simplify right side
    133,046.68x = 15,955,055,406.91
  5. Step 5: Solve for x
    x = 15,955,055,406.91/133,046.68
  6. Step 6: Final answer
    x = 119,920.74

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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.