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Finding the Fourth Proportional to 132,491.82, 198,405.38 and 79,150.90

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Solution

The fourth proportional to 132,491.82, 198,405.38 and 79,150.90 is: 118,527.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,491.82 : 198,405.38 = 79,150.90 : x
  2. Step 2: Convert to fraction form
    132,491.82/198,405.38 = 79,150.90/x
  3. Step 3: Cross multiply
    132,491.82x = 198,405.38 × 79,150.90
  4. Step 4: Simplify right side
    132,491.82x = 15,703,964,391.84
  5. Step 5: Solve for x
    x = 15,703,964,391.84/132,491.82
  6. Step 6: Final answer
    x = 118,527.80

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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.