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Finding the Third Proportional to 66,336.75 and 136,129.50

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Solution

The third proportional to 66,336.75 and 136,129.50 is: 279,351.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,336.75 : 136,129.50 = 136,129.50 : x
  2. Step 2: Convert to fraction form
    66,336.75/136,129.50 = 136,129.50/x
  3. Step 3: Cross multiply
    66,336.75x = 136,129.50 × 136,129.50
  4. Step 4: Simplify right side
    66,336.75x = 18,531,240,770.25
  5. Step 5: Solve for x
    x = 18,531,240,770.25/66,336.75
  6. Step 6: Final answer
    x = 279,351.05

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.