Home / 129,767.10-194,650.65-80,162.70

Finding the Fourth Proportional to 129,767.10, 194,650.65 and 80,162.70

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Solution

The fourth proportional to 129,767.10, 194,650.65 and 80,162.70 is: 120,244.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,767.10 : 194,650.65 = 80,162.70 : x
  2. Step 2: Convert to fraction form
    129,767.10/194,650.65 = 80,162.70/x
  3. Step 3: Cross multiply
    129,767.10x = 194,650.65 × 80,162.70
  4. Step 4: Simplify right side
    129,767.10x = 15,603,721,660.76
  5. Step 5: Solve for x
    x = 15,603,721,660.76/129,767.10
  6. Step 6: Final answer
    x = 120,244.05

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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.