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Finding the Third Proportional to 64,990.50 and 135,077.25

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Solution

The third proportional to 64,990.50 and 135,077.25 is: 280,746.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,990.50 : 135,077.25 = 135,077.25 : x
  2. Step 2: Convert to fraction form
    64,990.50/135,077.25 = 135,077.25/x
  3. Step 3: Cross multiply
    64,990.50x = 135,077.25 × 135,077.25
  4. Step 4: Simplify right side
    64,990.50x = 18,245,863,467.56
  5. Step 5: Solve for x
    x = 18,245,863,467.56/64,990.50
  6. Step 6: Final answer
    x = 280,746.62

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.