Home / 129,432.90-194,149.20-40,694.16

Finding the Fourth Proportional to 129,432.90, 194,149.20 and 40,694.16

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Solution

The fourth proportional to 129,432.90, 194,149.20 and 40,694.16 is: 61,041.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,432.90 : 194,149.20 = 40,694.16 : x
  2. Step 2: Convert to fraction form
    129,432.90/194,149.20 = 40,694.16/x
  3. Step 3: Cross multiply
    129,432.90x = 194,149.20 × 40,694.16
  4. Step 4: Simplify right side
    129,432.90x = 7,900,738,608.67
  5. Step 5: Solve for x
    x = 7,900,738,608.67/129,432.90
  6. Step 6: Final answer
    x = 61,041.19

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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.