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Finding the Third Proportional to 69,600 and 135,696

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Solution

The third proportional to 69,600 and 135,696 is: 264,560.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,600 : 135,696 = 135,696 : x
  2. Step 2: Convert to fraction form
    69,600/135,696 = 135,696/x
  3. Step 3: Cross multiply
    69,600x = 135,696 × 135,696
  4. Step 4: Simplify right side
    69,600x = 18,413,404,416
  5. Step 5: Solve for x
    x = 18,413,404,416/69,600
  6. Step 6: Final answer
    x = 264,560.41

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.