Answer:
BE = 81
Explanation:
From the graph we can see that point G is the barycentre of the triangle, because it's formed by the intersection of the three medians of the triangle, which are defined as segments from a vertex to the midpoint of the opposite side.
From the intersection of all triangle medians we have that:



Also, we know by hypothesis that
. Replacing this value:


Then, by sum of segments, we have:


Therefore, BE = 81.