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Finding the Fourth Proportional to 132,380.28, 198,603 and 65,851.92

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Solution

The fourth proportional to 132,380.28, 198,603 and 65,851.92 is: 98,794.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,380.28 : 198,603 = 65,851.92 : x
  2. Step 2: Convert to fraction form
    132,380.28/198,603 = 65,851.92/x
  3. Step 3: Cross multiply
    132,380.28x = 198,603 × 65,851.92
  4. Step 4: Simplify right side
    132,380.28x = 13,078,388,867.76
  5. Step 5: Solve for x
    x = 13,078,388,867.76/132,380.28
  6. Step 6: Final answer
    x = 98,794.09

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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.