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Finding the Fourth Proportional to 129,832.80, 194,603.40 and 54,940.20

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Solution

The fourth proportional to 129,832.80, 194,603.40 and 54,940.20 is: 82,348.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,832.80 : 194,603.40 = 54,940.20 : x
  2. Step 2: Convert to fraction form
    129,832.80/194,603.40 = 54,940.20/x
  3. Step 3: Cross multiply
    129,832.80x = 194,603.40 × 54,940.20
  4. Step 4: Simplify right side
    129,832.80x = 10,691,549,716.68
  5. Step 5: Solve for x
    x = 10,691,549,716.68/129,832.80
  6. Step 6: Final answer
    x = 82,348.60

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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.