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Finding the Third Proportional to 55,417 and 117,739

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Solution

The third proportional to 55,417 and 117,739 is: 250,148.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,417 : 117,739 = 117,739 : x
  2. Step 2: Convert to fraction form
    55,417/117,739 = 117,739/x
  3. Step 3: Cross multiply
    55,417x = 117,739 × 117,739
  4. Step 4: Simplify right side
    55,417x = 13,862,472,121
  5. Step 5: Solve for x
    x = 13,862,472,121/55,417
  6. Step 6: Final answer
    x = 250,148.37

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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.