Google PageRank Table - Compare Pagerank Values.
Nobody knows exactly how Google PageRank arange values to web sides the table below gives a fairly good estimation of the number of external links to achive a given PageRank value.
In case that you need to know how many incoming PR4 links that are required to have PR4 for your site, you simply look down the Page rank 4 column, and the answer is 18.5.
So you need 18.5 PR4 links to achieve a PageRank 4 for your site?Almost yes.
As a guideline, the table below gives good indication of what you should target.
PageRank Calculation:
(IMG:
http://www.webseomasters.com/images/seo%20tools/table.JPG)