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Finding the Third Proportional to 86,636 and 186,165

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Solution

The third proportional to 86,636 and 186,165 is: 400,034.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,636 : 186,165 = 186,165 : x
  2. Step 2: Convert to fraction form
    86,636/186,165 = 186,165/x
  3. Step 3: Cross multiply
    86,636x = 186,165 × 186,165
  4. Step 4: Simplify right side
    86,636x = 34,657,407,225
  5. Step 5: Solve for x
    x = 34,657,407,225/86,636
  6. Step 6: Final answer
    x = 400,034.71

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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.