Home / 126,228.40-189,112.20-102,727.60

Finding the Fourth Proportional to 126,228.40, 189,112.20 and 102,727.60

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Solution

The fourth proportional to 126,228.40, 189,112.20 and 102,727.60 is: 153,903.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,228.40 : 189,112.20 = 102,727.60 : x
  2. Step 2: Convert to fraction form
    126,228.40/189,112.20 = 102,727.60/x
  3. Step 3: Cross multiply
    126,228.40x = 189,112.20 × 102,727.60
  4. Step 4: Simplify right side
    126,228.40x = 19,427,042,436.72
  5. Step 5: Solve for x
    x = 19,427,042,436.72/126,228.40
  6. Step 6: Final answer
    x = 153,903.90

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1.5x scale

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.