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Finding the Third Proportional to 160,128 and 251,190

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Solution

The third proportional to 160,128 and 251,190 is: 394,037.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,128 : 251,190 = 251,190 : x
  2. Step 2: Convert to fraction form
    160,128/251,190 = 251,190/x
  3. Step 3: Cross multiply
    160,128x = 251,190 × 251,190
  4. Step 4: Simplify right side
    160,128x = 63,096,416,100
  5. Step 5: Solve for x
    x = 63,096,416,100/160,128
  6. Step 6: Final answer
    x = 394,037.37

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.