Home / 126,001.20-189,147.60-72,735.60

Finding the Fourth Proportional to 126,001.20, 189,147.60 and 72,735.60

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Solution

The fourth proportional to 126,001.20, 189,147.60 and 72,735.60 is: 109,187.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,001.20 : 189,147.60 = 72,735.60 : x
  2. Step 2: Convert to fraction form
    126,001.20/189,147.60 = 72,735.60/x
  3. Step 3: Cross multiply
    126,001.20x = 189,147.60 × 72,735.60
  4. Step 4: Simplify right side
    126,001.20x = 13,757,764,174.56
  5. Step 5: Solve for x
    x = 13,757,764,174.56/126,001.20
  6. Step 6: Final answer
    x = 109,187.56

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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.