Home / 129,326.20-193,874.10-76,679.80

Finding the Fourth Proportional to 129,326.20, 193,874.10 and 76,679.80

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Solution

The fourth proportional to 129,326.20, 193,874.10 and 76,679.80 is: 114,951.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,326.20 : 193,874.10 = 76,679.80 : x
  2. Step 2: Convert to fraction form
    129,326.20/193,874.10 = 76,679.80/x
  3. Step 3: Cross multiply
    129,326.20x = 193,874.10 × 76,679.80
  4. Step 4: Simplify right side
    129,326.20x = 14,866,227,213.18
  5. Step 5: Solve for x
    x = 14,866,227,213.18/129,326.20
  6. Step 6: Final answer
    x = 114,951.40

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1.5x scale

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.