Home / 129,626.22-194,650.29-80,021.65

Finding the Fourth Proportional to 129,626.22, 194,650.29 and 80,021.65

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Solution

The fourth proportional to 129,626.22, 194,650.29 and 80,021.65 is: 120,162.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,626.22 : 194,650.29 = 80,021.65 : x
  2. Step 2: Convert to fraction form
    129,626.22/194,650.29 = 80,021.65/x
  3. Step 3: Cross multiply
    129,626.22x = 194,650.29 × 80,021.65
  4. Step 4: Simplify right side
    129,626.22x = 15,576,236,709.67
  5. Step 5: Solve for x
    x = 15,576,236,709.67/129,626.22
  6. Step 6: Final answer
    x = 120,162.70

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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.