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Finding the Fourth Proportional to 132,440.90, 198,661.35 and 87,923.30

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Solution

The fourth proportional to 132,440.90, 198,661.35 and 87,923.30 is: 131,884.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,440.90 : 198,661.35 = 87,923.30 : x
  2. Step 2: Convert to fraction form
    132,440.90/198,661.35 = 87,923.30/x
  3. Step 3: Cross multiply
    132,440.90x = 198,661.35 × 87,923.30
  4. Step 4: Simplify right side
    132,440.90x = 17,466,961,474.46
  5. Step 5: Solve for x
    x = 17,466,961,474.46/132,440.90
  6. Step 6: Final answer
    x = 131,884.95

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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.