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Finding the Third Proportional to 100,440 and 155,621.25

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Solution

The third proportional to 100,440 and 155,621.25 is: 241,118.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,440 : 155,621.25 = 155,621.25 : x
  2. Step 2: Convert to fraction form
    100,440/155,621.25 = 155,621.25/x
  3. Step 3: Cross multiply
    100,440x = 155,621.25 × 155,621.25
  4. Step 4: Simplify right side
    100,440x = 24,217,973,451.56
  5. Step 5: Solve for x
    x = 24,217,973,451.56/100,440
  6. Step 6: Final answer
    x = 241,118.81

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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.