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Finding the Third Proportional to 127,220 and 168,211

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Solution

The third proportional to 127,220 and 168,211 is: 222,409.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,220 : 168,211 = 168,211 : x
  2. Step 2: Convert to fraction form
    127,220/168,211 = 168,211/x
  3. Step 3: Cross multiply
    127,220x = 168,211 × 168,211
  4. Step 4: Simplify right side
    127,220x = 28,294,940,521
  5. Step 5: Solve for x
    x = 28,294,940,521/127,220
  6. Step 6: Final answer
    x = 222,409.53

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.