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Finding the Third Proportional to 66,752,158 and 138,620,222

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Solution

The third proportional to 66,752,158 and 138,620,222 is: 287,864,340.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,752,158 : 138,620,222 = 138,620,222 : x
  2. Step 2: Convert to fraction form
    66,752,158/138,620,222 = 138,620,222/x
  3. Step 3: Cross multiply
    66,752,158x = 138,620,222 × 138,620,222
  4. Step 4: Simplify right side
    66,752,158x = 19,215,565,947,329,284
  5. Step 5: Solve for x
    x = 19,215,565,947,329,284/66,752,158
  6. Step 6: Final answer
    x = 287,864,340.62

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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.