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Finding the Fourth Proportional to 204,061.80, 306,092.70 and 85,693.80

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Solution

The fourth proportional to 204,061.80, 306,092.70 and 85,693.80 is: 128,540.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,061.80 : 306,092.70 = 85,693.80 : x
  2. Step 2: Convert to fraction form
    204,061.80/306,092.70 = 85,693.80/x
  3. Step 3: Cross multiply
    204,061.80x = 306,092.70 × 85,693.80
  4. Step 4: Simplify right side
    204,061.80x = 26,230,246,615.26
  5. Step 5: Solve for x
    x = 26,230,246,615.26/204,061.80
  6. Step 6: Final answer
    x = 128,540.70

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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.