Home / 126,636.24-189,786.90-66,541.92

Finding the Fourth Proportional to 126,636.24, 189,786.90 and 66,541.92

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Solution

The fourth proportional to 126,636.24, 189,786.90 and 66,541.92 is: 99,724.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,636.24 : 189,786.90 = 66,541.92 : x
  2. Step 2: Convert to fraction form
    126,636.24/189,786.90 = 66,541.92/x
  3. Step 3: Cross multiply
    126,636.24x = 189,786.90 × 66,541.92
  4. Step 4: Simplify right side
    126,636.24x = 12,628,784,716.85
  5. Step 5: Solve for x
    x = 12,628,784,716.85/126,636.24
  6. Step 6: Final answer
    x = 99,724.89

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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.