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Finding the Third Proportional to 86,859 and 134,487

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Solution

The third proportional to 86,859 and 134,487 is: 208,231.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,859 : 134,487 = 134,487 : x
  2. Step 2: Convert to fraction form
    86,859/134,487 = 134,487/x
  3. Step 3: Cross multiply
    86,859x = 134,487 × 134,487
  4. Step 4: Simplify right side
    86,859x = 18,086,753,169
  5. Step 5: Solve for x
    x = 18,086,753,169/86,859
  6. Step 6: Final answer
    x = 208,231.19

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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.