Home / 132,405.10-198,348.45-79,657.90

Finding the Fourth Proportional to 132,405.10, 198,348.45 and 79,657.90

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Solution

The fourth proportional to 132,405.10, 198,348.45 and 79,657.90 is: 119,330.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,405.10 : 198,348.45 = 79,657.90 : x
  2. Step 2: Convert to fraction form
    132,405.10/198,348.45 = 79,657.90/x
  3. Step 3: Cross multiply
    132,405.10x = 198,348.45 × 79,657.90
  4. Step 4: Simplify right side
    132,405.10x = 15,800,020,995.26
  5. Step 5: Solve for x
    x = 15,800,020,995.26/132,405.10
  6. Step 6: Final answer
    x = 119,330.91

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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.