Home / 126,180.20-189,270.30-103,629.80

Finding the Fourth Proportional to 126,180.20, 189,270.30 and 103,629.80

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Solution

The fourth proportional to 126,180.20, 189,270.30 and 103,629.80 is: 155,444.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,180.20 : 189,270.30 = 103,629.80 : x
  2. Step 2: Convert to fraction form
    126,180.20/189,270.30 = 103,629.80/x
  3. Step 3: Cross multiply
    126,180.20x = 189,270.30 × 103,629.80
  4. Step 4: Simplify right side
    126,180.20x = 19,614,043,334.94
  5. Step 5: Solve for x
    x = 19,614,043,334.94/126,180.20
  6. Step 6: Final answer
    x = 155,444.70

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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.