Home / 129,498.20-194,132.10-76,851.80

Finding the Fourth Proportional to 129,498.20, 194,132.10 and 76,851.80

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Solution

The fourth proportional to 129,498.20, 194,132.10 and 76,851.80 is: 115,209.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,498.20 : 194,132.10 = 76,851.80 : x
  2. Step 2: Convert to fraction form
    129,498.20/194,132.10 = 76,851.80/x
  3. Step 3: Cross multiply
    129,498.20x = 194,132.10 × 76,851.80
  4. Step 4: Simplify right side
    129,498.20x = 14,919,401,322.78
  5. Step 5: Solve for x
    x = 14,919,401,322.78/129,498.20
  6. Step 6: Final answer
    x = 115,209.33

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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.