Home / 129,450.40-194,175.60-76,832.80

Finding the Fourth Proportional to 129,450.40, 194,175.60 and 76,832.80

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Solution

The fourth proportional to 129,450.40, 194,175.60 and 76,832.80 is: 115,249.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,450.40 : 194,175.60 = 76,832.80 : x
  2. Step 2: Convert to fraction form
    129,450.40/194,175.60 = 76,832.80/x
  3. Step 3: Cross multiply
    129,450.40x = 194,175.60 × 76,832.80
  4. Step 4: Simplify right side
    129,450.40x = 14,919,055,039.68
  5. Step 5: Solve for x
    x = 14,919,055,039.68/129,450.40
  6. Step 6: Final answer
    x = 115,249.20

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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.