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Finding the Third Proportional to 90,676.97 and 140,879.25

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Solution

The third proportional to 90,676.97 and 140,879.25 is: 218,875.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,676.97 : 140,879.25 = 140,879.25 : x
  2. Step 2: Convert to fraction form
    90,676.97/140,879.25 = 140,879.25/x
  3. Step 3: Cross multiply
    90,676.97x = 140,879.25 × 140,879.25
  4. Step 4: Simplify right side
    90,676.97x = 19,846,963,080.56
  5. Step 5: Solve for x
    x = 19,846,963,080.56/90,676.97
  6. Step 6: Final answer
    x = 218,875.46

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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.