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Finding the Third Proportional to 126,437 and 189,991.50

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Solution

The third proportional to 126,437 and 189,991.50 is: 285,492.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,437 : 189,991.50 = 189,991.50 : x
  2. Step 2: Convert to fraction form
    126,437/189,991.50 = 189,991.50/x
  3. Step 3: Cross multiply
    126,437x = 189,991.50 × 189,991.50
  4. Step 4: Simplify right side
    126,437x = 36,096,770,072.25
  5. Step 5: Solve for x
    x = 36,096,770,072.25/126,437
  6. Step 6: Final answer
    x = 285,492.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.