Home / 204,434.30-306,542.10-85,971.80

Finding the Fourth Proportional to 204,434.30, 306,542.10 and 85,971.80

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Solution

The fourth proportional to 204,434.30, 306,542.10 and 85,971.80 is: 128,911.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,434.30 : 306,542.10 = 85,971.80 : x
  2. Step 2: Convert to fraction form
    204,434.30/306,542.10 = 85,971.80/x
  3. Step 3: Cross multiply
    204,434.30x = 306,542.10 × 85,971.80
  4. Step 4: Simplify right side
    204,434.30x = 26,353,976,112.78
  5. Step 5: Solve for x
    x = 26,353,976,112.78/204,434.30
  6. Step 6: Final answer
    x = 128,911.71

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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.