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Finding the Third Proportional to 121,522 and 189,961

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Solution

The third proportional to 121,522 and 189,961 is: 296,943.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,522 : 189,961 = 189,961 : x
  2. Step 2: Convert to fraction form
    121,522/189,961 = 189,961/x
  3. Step 3: Cross multiply
    121,522x = 189,961 × 189,961
  4. Step 4: Simplify right side
    121,522x = 36,085,181,521
  5. Step 5: Solve for x
    x = 36,085,181,521/121,522
  6. Step 6: Final answer
    x = 296,943.61

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.