Home / 281,868.94-422,758.40-82,142.61

Finding the Fourth Proportional to 281,868.94, 422,758.40 and 82,142.61

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Solution

The fourth proportional to 281,868.94, 422,758.40 and 82,142.61 is: 123,200.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,868.94 : 422,758.40 = 82,142.61 : x
  2. Step 2: Convert to fraction form
    281,868.94/422,758.40 = 82,142.61/x
  3. Step 3: Cross multiply
    281,868.94x = 422,758.40 × 82,142.61
  4. Step 4: Simplify right side
    281,868.94x = 34,726,476,841.42
  5. Step 5: Solve for x
    x = 34,726,476,841.42/281,868.94
  6. Step 6: Final answer
    x = 123,200.79

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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.