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Finding the Third Proportional to 71,122 and 107,131

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Solution

The third proportional to 71,122 and 107,131 is: 161,371.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,122 : 107,131 = 107,131 : x
  2. Step 2: Convert to fraction form
    71,122/107,131 = 107,131/x
  3. Step 3: Cross multiply
    71,122x = 107,131 × 107,131
  4. Step 4: Simplify right side
    71,122x = 11,477,051,161
  5. Step 5: Solve for x
    x = 11,477,051,161/71,122
  6. Step 6: Final answer
    x = 161,371.32

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.