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Finding the Third Proportional to 79,211,517 and 121,172,158

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Solution

The third proportional to 79,211,517 and 121,172,158 is: 185,360,569.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,211,517 : 121,172,158 = 121,172,158 : x
  2. Step 2: Convert to fraction form
    79,211,517/121,172,158 = 121,172,158/x
  3. Step 3: Cross multiply
    79,211,517x = 121,172,158 × 121,172,158
  4. Step 4: Simplify right side
    79,211,517x = 14,682,691,874,376,964
  5. Step 5: Solve for x
    x = 14,682,691,874,376,964/79,211,517
  6. Step 6: Final answer
    x = 185,360,569.15

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.