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Finding the Third Proportional to 135,999 and 206,995.50

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Solution

The third proportional to 135,999 and 206,995.50 is: 315,054.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,999 : 206,995.50 = 206,995.50 : x
  2. Step 2: Convert to fraction form
    135,999/206,995.50 = 206,995.50/x
  3. Step 3: Cross multiply
    135,999x = 206,995.50 × 206,995.50
  4. Step 4: Simplify right side
    135,999x = 42,847,137,020.25
  5. Step 5: Solve for x
    x = 42,847,137,020.25/135,999
  6. Step 6: Final answer
    x = 315,054.79

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.