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Finding the Third Proportional to 71,145 and 155,169

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Solution

The third proportional to 71,145 and 155,169 is: 338,427.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,145 : 155,169 = 155,169 : x
  2. Step 2: Convert to fraction form
    71,145/155,169 = 155,169/x
  3. Step 3: Cross multiply
    71,145x = 155,169 × 155,169
  4. Step 4: Simplify right side
    71,145x = 24,077,418,561
  5. Step 5: Solve for x
    x = 24,077,418,561/71,145
  6. Step 6: Final answer
    x = 338,427.42

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.