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Finding the Third Proportional to 79,211,521 and 121,172,164

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Solution

The third proportional to 79,211,521 and 121,172,164 is: 185,360,578.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,211,521 : 121,172,164 = 121,172,164 : x
  2. Step 2: Convert to fraction form
    79,211,521/121,172,164 = 121,172,164/x
  3. Step 3: Cross multiply
    79,211,521x = 121,172,164 × 121,172,164
  4. Step 4: Simplify right side
    79,211,521x = 14,682,693,328,442,896
  5. Step 5: Solve for x
    x = 14,682,693,328,442,896/79,211,521
  6. Step 6: Final answer
    x = 185,360,578.15

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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.