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Finding the Fourth Proportional to 141,393.92, 212,079.90 and 82,191.80

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Solution

The fourth proportional to 141,393.92, 212,079.90 and 82,191.80 is: 123,281.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,393.92 : 212,079.90 = 82,191.80 : x
  2. Step 2: Convert to fraction form
    141,393.92/212,079.90 = 82,191.80/x
  3. Step 3: Cross multiply
    141,393.92x = 212,079.90 × 82,191.80
  4. Step 4: Simplify right side
    141,393.92x = 17,431,228,724.82
  5. Step 5: Solve for x
    x = 17,431,228,724.82/141,393.92
  6. Step 6: Final answer
    x = 123,281.32

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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.