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Finding the Third Proportional to 61,520 and 130,694

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Solution

The third proportional to 61,520 and 130,694 is: 277,648.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,520 : 130,694 = 130,694 : x
  2. Step 2: Convert to fraction form
    61,520/130,694 = 130,694/x
  3. Step 3: Cross multiply
    61,520x = 130,694 × 130,694
  4. Step 4: Simplify right side
    61,520x = 17,080,921,636
  5. Step 5: Solve for x
    x = 17,080,921,636/61,520
  6. Step 6: Final answer
    x = 277,648.27

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.