Home / 231,891.28-347,992.80-82,131.04

Finding the Fourth Proportional to 231,891.28, 347,992.80 and 82,131.04

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Solution

The fourth proportional to 231,891.28, 347,992.80 and 82,131.04 is: 123,251.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,891.28 : 347,992.80 = 82,131.04 : x
  2. Step 2: Convert to fraction form
    231,891.28/347,992.80 = 82,131.04/x
  3. Step 3: Cross multiply
    231,891.28x = 347,992.80 × 82,131.04
  4. Step 4: Simplify right side
    231,891.28x = 28,581,010,576.51
  5. Step 5: Solve for x
    x = 28,581,010,576.51/231,891.28
  6. Step 6: Final answer
    x = 123,251.77

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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.