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Finding the Third Proportional to 72,979.50 and 157,213.50

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Solution

The third proportional to 72,979.50 and 157,213.50 is: 338,671.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,979.50 : 157,213.50 = 157,213.50 : x
  2. Step 2: Convert to fraction form
    72,979.50/157,213.50 = 157,213.50/x
  3. Step 3: Cross multiply
    72,979.50x = 157,213.50 × 157,213.50
  4. Step 4: Simplify right side
    72,979.50x = 24,716,084,582.25
  5. Step 5: Solve for x
    x = 24,716,084,582.25/72,979.50
  6. Step 6: Final answer
    x = 338,671.61

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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.