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Finding the Third Proportional to 66,975 and 138,571.50

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Solution

The third proportional to 66,975 and 138,571.50 is: 286,704.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,975 : 138,571.50 = 138,571.50 : x
  2. Step 2: Convert to fraction form
    66,975/138,571.50 = 138,571.50/x
  3. Step 3: Cross multiply
    66,975x = 138,571.50 × 138,571.50
  4. Step 4: Simplify right side
    66,975x = 19,202,060,612.25
  5. Step 5: Solve for x
    x = 19,202,060,612.25/66,975
  6. Step 6: Final answer
    x = 286,704.90

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.