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Finding the Fourth Proportional to 204,039.30, 306,058.95 and 85,844.10

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Solution

The fourth proportional to 204,039.30, 306,058.95 and 85,844.10 is: 128,766.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,039.30 : 306,058.95 = 85,844.10 : x
  2. Step 2: Convert to fraction form
    204,039.30/306,058.95 = 85,844.10/x
  3. Step 3: Cross multiply
    204,039.30x = 306,058.95 × 85,844.10
  4. Step 4: Simplify right side
    204,039.30x = 26,273,355,109.70
  5. Step 5: Solve for x
    x = 26,273,355,109.70/204,039.30
  6. Step 6: Final answer
    x = 128,766.15

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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.