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Finding the Third Proportional to 86,671 and 186,278

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Solution

The third proportional to 86,671 and 186,278 is: 400,358.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,671 : 186,278 = 186,278 : x
  2. Step 2: Convert to fraction form
    86,671/186,278 = 186,278/x
  3. Step 3: Cross multiply
    86,671x = 186,278 × 186,278
  4. Step 4: Simplify right side
    86,671x = 34,699,493,284
  5. Step 5: Solve for x
    x = 34,699,493,284/86,671
  6. Step 6: Final answer
    x = 400,358.75

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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.