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Finding the Fourth Proportional to 126,760.67, 189,867.64 and 119,308.03

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Solution

The fourth proportional to 126,760.67, 189,867.64 and 119,308.03 is: 178,704.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,760.67 : 189,867.64 = 119,308.03 : x
  2. Step 2: Convert to fraction form
    126,760.67/189,867.64 = 119,308.03/x
  3. Step 3: Cross multiply
    126,760.67x = 189,867.64 × 119,308.03
  4. Step 4: Simplify right side
    126,760.67x = 22,652,734,089.15
  5. Step 5: Solve for x
    x = 22,652,734,089.15/126,760.67
  6. Step 6: Final answer
    x = 178,704.75

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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.