Home / 231,027.62-318,784.20-129,040.52

Finding the Fourth Proportional to 231,027.62, 318,784.20 and 129,040.52

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Solution

The fourth proportional to 231,027.62, 318,784.20 and 129,040.52 is: 178,056.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,027.62 : 318,784.20 = 129,040.52 : x
  2. Step 2: Convert to fraction form
    231,027.62/318,784.20 = 129,040.52/x
  3. Step 3: Cross multiply
    231,027.62x = 318,784.20 × 129,040.52
  4. Step 4: Simplify right side
    231,027.62x = 41,136,078,935.78
  5. Step 5: Solve for x
    x = 41,136,078,935.78/231,027.62
  6. Step 6: Final answer
    x = 178,056.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.