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Finding the Third Proportional to 79,450 and 122,903

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Solution

The third proportional to 79,450 and 122,903 is: 190,121.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,450 : 122,903 = 122,903 : x
  2. Step 2: Convert to fraction form
    79,450/122,903 = 122,903/x
  3. Step 3: Cross multiply
    79,450x = 122,903 × 122,903
  4. Step 4: Simplify right side
    79,450x = 15,105,147,409
  5. Step 5: Solve for x
    x = 15,105,147,409/79,450
  6. Step 6: Final answer
    x = 190,121.43

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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.