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Finding the Third Proportional to 66,874,189.50 and 135,628,729.50

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Solution

The third proportional to 66,874,189.50 and 135,628,729.50 is: 275,071,031.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,874,189.50 : 135,628,729.50 = 135,628,729.50 : x
  2. Step 2: Convert to fraction form
    66,874,189.50/135,628,729.50 = 135,628,729.50/x
  3. Step 3: Cross multiply
    66,874,189.50x = 135,628,729.50 × 135,628,729.50
  4. Step 4: Simplify right side
    66,874,189.50x = 18,395,152,265,784,172
  5. Step 5: Solve for x
    x = 18,395,152,265,784,172/66,874,189.50
  6. Step 6: Final answer
    x = 275,071,031.19

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.