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Finding the Third Proportional to 71,828 and 155,128

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Solution

The third proportional to 71,828 and 155,128 is: 335,032.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,828 : 155,128 = 155,128 : x
  2. Step 2: Convert to fraction form
    71,828/155,128 = 155,128/x
  3. Step 3: Cross multiply
    71,828x = 155,128 × 155,128
  4. Step 4: Simplify right side
    71,828x = 24,064,696,384
  5. Step 5: Solve for x
    x = 24,064,696,384/71,828
  6. Step 6: Final answer
    x = 335,032.25

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.