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Finding the Third Proportional to 72,657.38 and 156,780.75

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Solution

The third proportional to 72,657.38 and 156,780.75 is: 338,302.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,657.38 : 156,780.75 = 156,780.75 : x
  2. Step 2: Convert to fraction form
    72,657.38/156,780.75 = 156,780.75/x
  3. Step 3: Cross multiply
    72,657.38x = 156,780.75 × 156,780.75
  4. Step 4: Simplify right side
    72,657.38x = 24,580,203,570.56
  5. Step 5: Solve for x
    x = 24,580,203,570.56/72,657.38
  6. Step 6: Final answer
    x = 338,302.94

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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.