Home / 231,938.78-347,806.92-82,129.28

Finding the Fourth Proportional to 231,938.78, 347,806.92 and 82,129.28

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Solution

The fourth proportional to 231,938.78, 347,806.92 and 82,129.28 is: 123,158.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,938.78 : 347,806.92 = 82,129.28 : x
  2. Step 2: Convert to fraction form
    231,938.78/347,806.92 = 82,129.28/x
  3. Step 3: Cross multiply
    231,938.78x = 347,806.92 × 82,129.28
  4. Step 4: Simplify right side
    231,938.78x = 28,565,131,918.62
  5. Step 5: Solve for x
    x = 28,565,131,918.62/231,938.78
  6. Step 6: Final answer
    x = 123,158.07

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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.