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Finding the Third Proportional to 40,115 and 81,204

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Solution

The third proportional to 40,115 and 81,204 is: 164,379.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,115 : 81,204 = 81,204 : x
  2. Step 2: Convert to fraction form
    40,115/81,204 = 81,204/x
  3. Step 3: Cross multiply
    40,115x = 81,204 × 81,204
  4. Step 4: Simplify right side
    40,115x = 6,594,089,616
  5. Step 5: Solve for x
    x = 6,594,089,616/40,115
  6. Step 6: Final answer
    x = 164,379.65

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Why These Related Problems?

These problems maintain the same ratio (2.02) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.