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Finding the Fourth Proportional to 126,687.44, 190,086.29 and 79,410.88

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Solution

The fourth proportional to 126,687.44, 190,086.29 and 79,410.88 is: 119,150.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,687.44 : 190,086.29 = 79,410.88 : x
  2. Step 2: Convert to fraction form
    126,687.44/190,086.29 = 79,410.88/x
  3. Step 3: Cross multiply
    126,687.44x = 190,086.29 × 79,410.88
  4. Step 4: Simplify right side
    126,687.44x = 15,094,919,564.84
  5. Step 5: Solve for x
    x = 15,094,919,564.84/126,687.44
  6. Step 6: Final answer
    x = 119,150.88

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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.