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Finding the Third Proportional to 66,990.50 and 106,636

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Solution

The third proportional to 66,990.50 and 106,636 is: 169,744.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,990.50 : 106,636 = 106,636 : x
  2. Step 2: Convert to fraction form
    66,990.50/106,636 = 106,636/x
  3. Step 3: Cross multiply
    66,990.50x = 106,636 × 106,636
  4. Step 4: Simplify right side
    66,990.50x = 11,371,236,496
  5. Step 5: Solve for x
    x = 11,371,236,496/66,990.50
  6. Step 6: Final answer
    x = 169,744.02

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.