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Finding the Third Proportional to 97,120 and 131,211

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Solution

The third proportional to 97,120 and 131,211 is: 177,268.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,120 : 131,211 = 131,211 : x
  2. Step 2: Convert to fraction form
    97,120/131,211 = 131,211/x
  3. Step 3: Cross multiply
    97,120x = 131,211 × 131,211
  4. Step 4: Simplify right side
    97,120x = 17,216,326,521
  5. Step 5: Solve for x
    x = 17,216,326,521/97,120
  6. Step 6: Final answer
    x = 177,268.60

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.