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Finding the Third Proportional to 78,324.75 and 155,008.13

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Solution

The third proportional to 78,324.75 and 155,008.13 is: 306,767.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,324.75 : 155,008.13 = 155,008.13 : x
  2. Step 2: Convert to fraction form
    78,324.75/155,008.13 = 155,008.13/x
  3. Step 3: Cross multiply
    78,324.75x = 155,008.13 × 155,008.13
  4. Step 4: Simplify right side
    78,324.75x = 24,027,518,816.02
  5. Step 5: Solve for x
    x = 24,027,518,816.02/78,324.75
  6. Step 6: Final answer
    x = 306,767.90

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Why These Related Problems?

These problems maintain the same ratio (1.98) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.