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Finding the Third Proportional to 72,874 and 157,228

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Solution

The third proportional to 72,874 and 157,228 is: 339,224.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,874 : 157,228 = 157,228 : x
  2. Step 2: Convert to fraction form
    72,874/157,228 = 157,228/x
  3. Step 3: Cross multiply
    72,874x = 157,228 × 157,228
  4. Step 4: Simplify right side
    72,874x = 24,720,643,984
  5. Step 5: Solve for x
    x = 24,720,643,984/72,874
  6. Step 6: Final answer
    x = 339,224.47

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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.