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Finding the Third Proportional to 79,512 and 168,220

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Solution

The third proportional to 79,512 and 168,220 is: 355,895.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,512 : 168,220 = 168,220 : x
  2. Step 2: Convert to fraction form
    79,512/168,220 = 168,220/x
  3. Step 3: Cross multiply
    79,512x = 168,220 × 168,220
  4. Step 4: Simplify right side
    79,512x = 28,297,968,400
  5. Step 5: Solve for x
    x = 28,297,968,400/79,512
  6. Step 6: Final answer
    x = 355,895.57

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.