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Finding the Third Proportional to 122,311 and 187,113

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Solution

The third proportional to 122,311 and 187,113 is: 286,247.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,311 : 187,113 = 187,113 : x
  2. Step 2: Convert to fraction form
    122,311/187,113 = 187,113/x
  3. Step 3: Cross multiply
    122,311x = 187,113 × 187,113
  4. Step 4: Simplify right side
    122,311x = 35,011,274,769
  5. Step 5: Solve for x
    x = 35,011,274,769/122,311
  6. Step 6: Final answer
    x = 286,247.96

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.