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Finding the Third Proportional to 76,866 and 103,611

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Solution

The third proportional to 76,866 and 103,611 is: 139,661.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,866 : 103,611 = 103,611 : x
  2. Step 2: Convert to fraction form
    76,866/103,611 = 103,611/x
  3. Step 3: Cross multiply
    76,866x = 103,611 × 103,611
  4. Step 4: Simplify right side
    76,866x = 10,735,239,321
  5. Step 5: Solve for x
    x = 10,735,239,321/76,866
  6. Step 6: Final answer
    x = 139,661.74

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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.