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Finding the Third Proportional to 100,419.75 and 155,490.75

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Solution

The third proportional to 100,419.75 and 155,490.75 is: 240,763.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,419.75 : 155,490.75 = 155,490.75 : x
  2. Step 2: Convert to fraction form
    100,419.75/155,490.75 = 155,490.75/x
  3. Step 3: Cross multiply
    100,419.75x = 155,490.75 × 155,490.75
  4. Step 4: Simplify right side
    100,419.75x = 24,177,373,335.56
  5. Step 5: Solve for x
    x = 24,177,373,335.56/100,419.75
  6. Step 6: Final answer
    x = 240,763.13

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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.