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Finding the Third Proportional to 72,653 and 156,781

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Solution

The third proportional to 72,653 and 156,781 is: 338,324.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,653 : 156,781 = 156,781 : x
  2. Step 2: Convert to fraction form
    72,653/156,781 = 156,781/x
  3. Step 3: Cross multiply
    72,653x = 156,781 × 156,781
  4. Step 4: Simplify right side
    72,653x = 24,580,281,961
  5. Step 5: Solve for x
    x = 24,580,281,961/72,653
  6. Step 6: Final answer
    x = 338,324.39

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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.