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Finding the Fourth Proportional to 132,495.60, 198,613.80 and 65,881.20

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Solution

The fourth proportional to 132,495.60, 198,613.80 and 65,881.20 is: 98,757.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,495.60 : 198,613.80 = 65,881.20 : x
  2. Step 2: Convert to fraction form
    132,495.60/198,613.80 = 65,881.20/x
  3. Step 3: Cross multiply
    132,495.60x = 198,613.80 × 65,881.20
  4. Step 4: Simplify right side
    132,495.60x = 13,084,915,480.56
  5. Step 5: Solve for x
    x = 13,084,915,480.56/132,495.60
  6. Step 6: Final answer
    x = 98,757.36

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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.