Home / 126,002.20-189,149.10-72,736.60

Finding the Fourth Proportional to 126,002.20, 189,149.10 and 72,736.60

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Solution

The fourth proportional to 126,002.20, 189,149.10 and 72,736.60 is: 109,189.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,002.20 : 189,149.10 = 72,736.60 : x
  2. Step 2: Convert to fraction form
    126,002.20/189,149.10 = 72,736.60/x
  3. Step 3: Cross multiply
    126,002.20x = 189,149.10 × 72,736.60
  4. Step 4: Simplify right side
    126,002.20x = 13,758,062,427.06
  5. Step 5: Solve for x
    x = 13,758,062,427.06/126,002.20
  6. Step 6: Final answer
    x = 109,189.07

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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.