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Finding the Third Proportional to 61,698 and 135,522

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Solution

The third proportional to 61,698 and 135,522 is: 297,679.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,698 : 135,522 = 135,522 : x
  2. Step 2: Convert to fraction form
    61,698/135,522 = 135,522/x
  3. Step 3: Cross multiply
    61,698x = 135,522 × 135,522
  4. Step 4: Simplify right side
    61,698x = 18,366,212,484
  5. Step 5: Solve for x
    x = 18,366,212,484/61,698
  6. Step 6: Final answer
    x = 297,679.22

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.