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Finding the Third Proportional to 63,990 and 102,230

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Solution

The third proportional to 63,990 and 102,230 is: 163,321.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,990 : 102,230 = 102,230 : x
  2. Step 2: Convert to fraction form
    63,990/102,230 = 102,230/x
  3. Step 3: Cross multiply
    63,990x = 102,230 × 102,230
  4. Step 4: Simplify right side
    63,990x = 10,450,972,900
  5. Step 5: Solve for x
    x = 10,450,972,900/63,990
  6. Step 6: Final answer
    x = 163,321.97

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.