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Finding the Fourth Proportional to 132,227.40, 198,341.10 and 79,739.40

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Solution

The fourth proportional to 132,227.40, 198,341.10 and 79,739.40 is: 119,609.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,227.40 : 198,341.10 = 79,739.40 : x
  2. Step 2: Convert to fraction form
    132,227.40/198,341.10 = 79,739.40/x
  3. Step 3: Cross multiply
    132,227.40x = 198,341.10 × 79,739.40
  4. Step 4: Simplify right side
    132,227.40x = 15,815,600,309.34
  5. Step 5: Solve for x
    x = 15,815,600,309.34/132,227.40
  6. Step 6: Final answer
    x = 119,609.10

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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.