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Finding the Third Proportional to 64,642.50 and 137,112.75

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Solution

The third proportional to 64,642.50 and 137,112.75 is: 290,828.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,642.50 : 137,112.75 = 137,112.75 : x
  2. Step 2: Convert to fraction form
    64,642.50/137,112.75 = 137,112.75/x
  3. Step 3: Cross multiply
    64,642.50x = 137,112.75 × 137,112.75
  4. Step 4: Simplify right side
    64,642.50x = 18,799,906,212.56
  5. Step 5: Solve for x
    x = 18,799,906,212.56/64,642.50
  6. Step 6: Final answer
    x = 290,828.89

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.