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Finding the Fourth Proportional to 133,098.60, 199,687.92 and 79,849.20

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Solution

The fourth proportional to 133,098.60, 199,687.92 and 79,849.20 is: 119,797.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,098.60 : 199,687.92 = 79,849.20 : x
  2. Step 2: Convert to fraction form
    133,098.60/199,687.92 = 79,849.20/x
  3. Step 3: Cross multiply
    133,098.60x = 199,687.92 × 79,849.20
  4. Step 4: Simplify right side
    133,098.60x = 15,944,920,661.66
  5. Step 5: Solve for x
    x = 15,944,920,661.66/133,098.60
  6. Step 6: Final answer
    x = 119,797.81

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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.