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Finding the Third Proportional to 79,274,210 and 121,280,610

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Solution

The third proportional to 79,274,210 and 121,280,610 is: 185,545,669.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,274,210 : 121,280,610 = 121,280,610 : x
  2. Step 2: Convert to fraction form
    79,274,210/121,280,610 = 121,280,610/x
  3. Step 3: Cross multiply
    79,274,210x = 121,280,610 × 121,280,610
  4. Step 4: Simplify right side
    79,274,210x = 14,708,986,361,972,100
  5. Step 5: Solve for x
    x = 14,708,986,361,972,100/79,274,210
  6. Step 6: Final answer
    x = 185,545,669.42

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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.