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Finding the Third Proportional to 72,743 and 156,553

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Solution

The third proportional to 72,743 and 156,553 is: 336,923.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,743 : 156,553 = 156,553 : x
  2. Step 2: Convert to fraction form
    72,743/156,553 = 156,553/x
  3. Step 3: Cross multiply
    72,743x = 156,553 × 156,553
  4. Step 4: Simplify right side
    72,743x = 24,508,841,809
  5. Step 5: Solve for x
    x = 24,508,841,809/72,743
  6. Step 6: Final answer
    x = 336,923.72

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.