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Finding the Third Proportional to 68,799.38 and 128,958.75

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Solution

The third proportional to 68,799.38 and 128,958.75 is: 241,722.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,799.38 : 128,958.75 = 128,958.75 : x
  2. Step 2: Convert to fraction form
    68,799.38/128,958.75 = 128,958.75/x
  3. Step 3: Cross multiply
    68,799.38x = 128,958.75 × 128,958.75
  4. Step 4: Simplify right side
    68,799.38x = 16,630,359,201.56
  5. Step 5: Solve for x
    x = 16,630,359,201.56/68,799.38
  6. Step 6: Final answer
    x = 241,722.53

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Why These Related Problems?

These problems maintain the same ratio (1.87) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.