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Finding the Third Proportional to 66,081 and 137,634

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Solution

The third proportional to 66,081 and 137,634 is: 286,665.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,081 : 137,634 = 137,634 : x
  2. Step 2: Convert to fraction form
    66,081/137,634 = 137,634/x
  3. Step 3: Cross multiply
    66,081x = 137,634 × 137,634
  4. Step 4: Simplify right side
    66,081x = 18,943,117,956
  5. Step 5: Solve for x
    x = 18,943,117,956/66,081
  6. Step 6: Final answer
    x = 286,665.12

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.