An indirect approach to the construction of Langrangians for dissipativelike systems was presented. First, the differential equations of motion were transformed into the selfadjoint equations with transforming the coordinates and time variables. Secondly, a Lagrangian can be computed from the selfadjoint equations of motion. Lastly, the Lagrangian of the given equations was obtained by the inverse transformation of the coordinates and time variables. Two examples were given to illustrate the applications of the results.