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Finding the Third Proportional to 100,845 and 212,017.50

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Solution

The third proportional to 100,845 and 212,017.50 is: 445,747.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,845 : 212,017.50 = 212,017.50 : x
  2. Step 2: Convert to fraction form
    100,845/212,017.50 = 212,017.50/x
  3. Step 3: Cross multiply
    100,845x = 212,017.50 × 212,017.50
  4. Step 4: Simplify right side
    100,845x = 44,951,420,306.25
  5. Step 5: Solve for x
    x = 44,951,420,306.25/100,845
  6. Step 6: Final answer
    x = 445,747.64

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.