To find the width of the box, we can use the formula for the volume of a right rectangular prism:
\[ \text{Volume} = \text{length} \times \text{width} \times \text{height} \]
We know the following values:
- Volume = 162,000 cubic centimeters
- Length = 90 cm
- Height = 40 cm
We can rearrange the formula to solve for width:
\[ \text{width} = \frac{\text{Volume}}{\text{length} \times \text{height}} \]
Substituting in the known values:
\[ \text{width} = \frac{162,000}{90 \times 40} \]
Calculating \(90 \times 40\):
\[ 90 \times 40 = 3600 \]
Now substitute this back into the equation for width:
\[ \text{width} = \frac{162,000}{3600} \]
Calculating this gives:
\[ \text{width} = 45 \text{ cm} \]
So, the width of the box is 45 cm.