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Finding the Third Proportional to 66,172,376 and 100,109,630

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Solution

The third proportional to 66,172,376 and 100,109,630 is: 151,451,989.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,172,376 : 100,109,630 = 100,109,630 : x
  2. Step 2: Convert to fraction form
    66,172,376/100,109,630 = 100,109,630/x
  3. Step 3: Cross multiply
    66,172,376x = 100,109,630 × 100,109,630
  4. Step 4: Simplify right side
    66,172,376x = 10,021,938,018,736,900
  5. Step 5: Solve for x
    x = 10,021,938,018,736,900/66,172,376
  6. Step 6: Final answer
    x = 151,451,989.86

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.