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Finding the Fourth Proportional to 132,492.60, 198,686.10 and 43,721.40

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Solution

The fourth proportional to 132,492.60, 198,686.10 and 43,721.40 is: 65,564.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,492.60 : 198,686.10 = 43,721.40 : x
  2. Step 2: Convert to fraction form
    132,492.60/198,686.10 = 43,721.40/x
  3. Step 3: Cross multiply
    132,492.60x = 198,686.10 × 43,721.40
  4. Step 4: Simplify right side
    132,492.60x = 8,686,834,452.54
  5. Step 5: Solve for x
    x = 8,686,834,452.54/132,492.60
  6. Step 6: Final answer
    x = 65,564.68

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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.