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Finding the Third Proportional to 126,321 and 190,790

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Solution

The third proportional to 126,321 and 190,790 is: 288,161.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,321 : 190,790 = 190,790 : x
  2. Step 2: Convert to fraction form
    126,321/190,790 = 190,790/x
  3. Step 3: Cross multiply
    126,321x = 190,790 × 190,790
  4. Step 4: Simplify right side
    126,321x = 36,400,824,100
  5. Step 5: Solve for x
    x = 36,400,824,100/126,321
  6. Step 6: Final answer
    x = 288,161.30

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.