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Finding the Fourth Proportional to 137,600.60, 206,595.30 and 85,112.60

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Solution

The fourth proportional to 137,600.60, 206,595.30 and 85,112.60 is: 127,789.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,600.60 : 206,595.30 = 85,112.60 : x
  2. Step 2: Convert to fraction form
    137,600.60/206,595.30 = 85,112.60/x
  3. Step 3: Cross multiply
    137,600.60x = 206,595.30 × 85,112.60
  4. Step 4: Simplify right side
    137,600.60x = 17,583,863,130.78
  5. Step 5: Solve for x
    x = 17,583,863,130.78/137,600.60
  6. Step 6: Final answer
    x = 127,789.15

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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.