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Finding the Third Proportional to 69,198 and 103,661

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Solution

The third proportional to 69,198 and 103,661 is: 155,287.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,198 : 103,661 = 103,661 : x
  2. Step 2: Convert to fraction form
    69,198/103,661 = 103,661/x
  3. Step 3: Cross multiply
    69,198x = 103,661 × 103,661
  4. Step 4: Simplify right side
    69,198x = 10,745,602,921
  5. Step 5: Solve for x
    x = 10,745,602,921/69,198
  6. Step 6: Final answer
    x = 155,287.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.