I was able to get my site http://www.iwatchseries.com alexa rank under 500k but it has yet to acquire a google pr and I would like to get alexa under 100k in next month or so. HELP ME! LOL!
In order to get pr you have get back links, you can get them by submitting to directories and posting on forums with links in your sig.
I would not worry about either Alexea or PR first of all. Neither of them equal traffic! Worry about creating quality content. When that is done, the alexea and pr will go up all on their own when users begin to visit your site!