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Finding the Third Proportional to 85,866 and 115,677

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Solution

The third proportional to 85,866 and 115,677 is: 155,837.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,866 : 115,677 = 115,677 : x
  2. Step 2: Convert to fraction form
    85,866/115,677 = 115,677/x
  3. Step 3: Cross multiply
    85,866x = 115,677 × 115,677
  4. Step 4: Simplify right side
    85,866x = 13,381,168,329
  5. Step 5: Solve for x
    x = 13,381,168,329/85,866
  6. Step 6: Final answer
    x = 155,837.80

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.