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Finding the Third Proportional to 122,190 and 189,195

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Solution

The third proportional to 122,190 and 189,195 is: 292,943.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,190 : 189,195 = 189,195 : x
  2. Step 2: Convert to fraction form
    122,190/189,195 = 189,195/x
  3. Step 3: Cross multiply
    122,190x = 189,195 × 189,195
  4. Step 4: Simplify right side
    122,190x = 35,794,748,025
  5. Step 5: Solve for x
    x = 35,794,748,025/122,190
  6. Step 6: Final answer
    x = 292,943.35

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.