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Finding the Fourth Proportional to 132,375.80, 198,563.70 and 79,758.20

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Solution

The fourth proportional to 132,375.80, 198,563.70 and 79,758.20 is: 119,637.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,375.80 : 198,563.70 = 79,758.20 : x
  2. Step 2: Convert to fraction form
    132,375.80/198,563.70 = 79,758.20/x
  3. Step 3: Cross multiply
    132,375.80x = 198,563.70 × 79,758.20
  4. Step 4: Simplify right side
    132,375.80x = 15,837,083,297.34
  5. Step 5: Solve for x
    x = 15,837,083,297.34/132,375.80
  6. Step 6: Final answer
    x = 119,637.30

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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.