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Finding the Third Proportional to 66,752,154 and 138,620,214

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Solution

The third proportional to 66,752,154 and 138,620,214 is: 287,864,324.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,752,154 : 138,620,214 = 138,620,214 : x
  2. Step 2: Convert to fraction form
    66,752,154/138,620,214 = 138,620,214/x
  3. Step 3: Cross multiply
    66,752,154x = 138,620,214 × 138,620,214
  4. Step 4: Simplify right side
    66,752,154x = 19,215,563,729,405,796
  5. Step 5: Solve for x
    x = 19,215,563,729,405,796/66,752,154
  6. Step 6: Final answer
    x = 287,864,324.64

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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.