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Finding the Third Proportional to 100,391.91 and 155,447.86

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Solution

The third proportional to 100,391.91 and 155,447.86 is: 240,697.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,391.91 : 155,447.86 = 155,447.86 : x
  2. Step 2: Convert to fraction form
    100,391.91/155,447.86 = 155,447.86/x
  3. Step 3: Cross multiply
    100,391.91x = 155,447.86 × 155,447.86
  4. Step 4: Simplify right side
    100,391.91x = 24,164,036,984.27
  5. Step 5: Solve for x
    x = 24,164,036,984.27/100,391.91
  6. Step 6: Final answer
    x = 240,697.06

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.