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Finding the Fourth Proportional to 132,677.20, 198,749.04 and 65,915.20

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Solution

The fourth proportional to 132,677.20, 198,749.04 and 65,915.20 is: 98,740.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,677.20 : 198,749.04 = 65,915.20 : x
  2. Step 2: Convert to fraction form
    132,677.20/198,749.04 = 65,915.20/x
  3. Step 3: Cross multiply
    132,677.20x = 198,749.04 × 65,915.20
  4. Step 4: Simplify right side
    132,677.20x = 13,100,582,721.41
  5. Step 5: Solve for x
    x = 13,100,582,721.41/132,677.20
  6. Step 6: Final answer
    x = 98,740.27

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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.