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Finding the Fourth Proportional to 129,882.40, 194,998.80 and 83,226.40

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Solution

The fourth proportional to 129,882.40, 194,998.80 and 83,226.40 is: 124,951.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,882.40 : 194,998.80 = 83,226.40 : x
  2. Step 2: Convert to fraction form
    129,882.40/194,998.80 = 83,226.40/x
  3. Step 3: Cross multiply
    129,882.40x = 194,998.80 × 83,226.40
  4. Step 4: Simplify right side
    129,882.40x = 16,229,048,128.32
  5. Step 5: Solve for x
    x = 16,229,048,128.32/129,882.40
  6. Step 6: Final answer
    x = 124,951.87

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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.