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Finding the Third Proportional to 122,800 and 189,624

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Solution

The third proportional to 122,800 and 189,624 is: 292,811.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,800 : 189,624 = 189,624 : x
  2. Step 2: Convert to fraction form
    122,800/189,624 = 189,624/x
  3. Step 3: Cross multiply
    122,800x = 189,624 × 189,624
  4. Step 4: Simplify right side
    122,800x = 35,957,261,376
  5. Step 5: Solve for x
    x = 35,957,261,376/122,800
  6. Step 6: Final answer
    x = 292,811.57

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.