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Finding the Third Proportional to 66,752,156 and 138,620,218

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Solution

The third proportional to 66,752,156 and 138,620,218 is: 287,864,332.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,752,156 : 138,620,218 = 138,620,218 : x
  2. Step 2: Convert to fraction form
    66,752,156/138,620,218 = 138,620,218/x
  3. Step 3: Cross multiply
    66,752,156x = 138,620,218 × 138,620,218
  4. Step 4: Simplify right side
    66,752,156x = 19,215,564,838,367,524
  5. Step 5: Solve for x
    x = 19,215,564,838,367,524/66,752,156
  6. Step 6: Final answer
    x = 287,864,332.63

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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.