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Finding the Third Proportional to 97,211 and 139,012

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Solution

The third proportional to 97,211 and 139,012 is: 198,787.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,211 : 139,012 = 139,012 : x
  2. Step 2: Convert to fraction form
    97,211/139,012 = 139,012/x
  3. Step 3: Cross multiply
    97,211x = 139,012 × 139,012
  4. Step 4: Simplify right side
    97,211x = 19,324,336,144
  5. Step 5: Solve for x
    x = 19,324,336,144/97,211
  6. Step 6: Final answer
    x = 198,787.55

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.