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Finding the Third Proportional to 79,243.31 and 122,892.19

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Solution

The third proportional to 79,243.31 and 122,892.19 is: 190,583.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,243.31 : 122,892.19 = 122,892.19 : x
  2. Step 2: Convert to fraction form
    79,243.31/122,892.19 = 122,892.19/x
  3. Step 3: Cross multiply
    79,243.31x = 122,892.19 × 122,892.19
  4. Step 4: Simplify right side
    79,243.31x = 15,102,489,748.54
  5. Step 5: Solve for x
    x = 15,102,489,748.54/79,243.31
  6. Step 6: Final answer
    x = 190,583.78

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.