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Finding the Third Proportional to 74,961.75 and 161,039.25

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Solution

The third proportional to 74,961.75 and 161,039.25 is: 345,958.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,961.75 : 161,039.25 = 161,039.25 : x
  2. Step 2: Convert to fraction form
    74,961.75/161,039.25 = 161,039.25/x
  3. Step 3: Cross multiply
    74,961.75x = 161,039.25 × 161,039.25
  4. Step 4: Simplify right side
    74,961.75x = 25,933,640,040.56
  5. Step 5: Solve for x
    x = 25,933,640,040.56/74,961.75
  6. Step 6: Final answer
    x = 345,958.31

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.