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Finding the Third Proportional to 103,689 and 151,645

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Solution

The third proportional to 103,689 and 151,645 is: 221,780.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,689 : 151,645 = 151,645 : x
  2. Step 2: Convert to fraction form
    103,689/151,645 = 151,645/x
  3. Step 3: Cross multiply
    103,689x = 151,645 × 151,645
  4. Step 4: Simplify right side
    103,689x = 22,996,206,025
  5. Step 5: Solve for x
    x = 22,996,206,025/103,689
  6. Step 6: Final answer
    x = 221,780.57

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.