Home / 129,847.18-179,191.38-76,170.88

Finding the Fourth Proportional to 129,847.18, 179,191.38 and 76,170.88

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Solution

The fourth proportional to 129,847.18, 179,191.38 and 76,170.88 is: 105,117.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,847.18 : 179,191.38 = 76,170.88 : x
  2. Step 2: Convert to fraction form
    129,847.18/179,191.38 = 76,170.88/x
  3. Step 3: Cross multiply
    129,847.18x = 179,191.38 × 76,170.88
  4. Step 4: Simplify right side
    129,847.18x = 13,649,165,103.01
  5. Step 5: Solve for x
    x = 13,649,165,103.01/129,847.18
  6. Step 6: Final answer
    x = 105,117.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.