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Finding the Fourth Proportional to 132,428.70, 198,649.17 and 43,689.96

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Solution

The fourth proportional to 132,428.70, 198,649.17 and 43,689.96 is: 65,536.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,428.70 : 198,649.17 = 43,689.96 : x
  2. Step 2: Convert to fraction form
    132,428.70/198,649.17 = 43,689.96/x
  3. Step 3: Cross multiply
    132,428.70x = 198,649.17 × 43,689.96
  4. Step 4: Simplify right side
    132,428.70x = 8,678,974,291.33
  5. Step 5: Solve for x
    x = 8,678,974,291.33/132,428.70
  6. Step 6: Final answer
    x = 65,536.96

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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.