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Finding the Third Proportional to 71,663.50 and 149,209

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Solution

The third proportional to 71,663.50 and 149,209 is: 310,664.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,663.50 : 149,209 = 149,209 : x
  2. Step 2: Convert to fraction form
    71,663.50/149,209 = 149,209/x
  3. Step 3: Cross multiply
    71,663.50x = 149,209 × 149,209
  4. Step 4: Simplify right side
    71,663.50x = 22,263,325,681
  5. Step 5: Solve for x
    x = 22,263,325,681/71,663.50
  6. Step 6: Final answer
    x = 310,664.78

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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.