  We apply a new method of determination of the size of the broad emission-line
region (BLR) in active galactic nuclei. This method relates the radius of the
broad-line region of AGN to the soft X-ray luminosity and spectral index.
Comparing the BLR distances calculated from our photoionization scaling model
to the BLR distances determined by reverberation mapping shows that the scaling
law agrees with the $R\sim L^{1/2}$ empirical relation. We investigate a
complimentary method of estimating the BLR distance - based on the Keplerian
broadening of the emission lines and the central mass estimated from X-ray
variability.
