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Finding the Third Proportional to 66,760 and 135,364

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Solution

The third proportional to 66,760 and 135,364 is: 274,466.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,760 : 135,364 = 135,364 : x
  2. Step 2: Convert to fraction form
    66,760/135,364 = 135,364/x
  3. Step 3: Cross multiply
    66,760x = 135,364 × 135,364
  4. Step 4: Simplify right side
    66,760x = 18,323,412,496
  5. Step 5: Solve for x
    x = 18,323,412,496/66,760
  6. Step 6: Final answer
    x = 274,466.93

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.