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Finding the Fourth Proportional to 137,499.60, 206,249.40 and 82,203.60

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Solution

The fourth proportional to 137,499.60, 206,249.40 and 82,203.60 is: 123,305.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,499.60 : 206,249.40 = 82,203.60 : x
  2. Step 2: Convert to fraction form
    137,499.60/206,249.40 = 82,203.60/x
  3. Step 3: Cross multiply
    137,499.60x = 206,249.40 × 82,203.60
  4. Step 4: Simplify right side
    137,499.60x = 16,954,443,177.84
  5. Step 5: Solve for x
    x = 16,954,443,177.84/137,499.60
  6. Step 6: Final answer
    x = 123,305.40

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1.5x scale

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.