I'd be spending up to 100 a week on food shopping, and throwing out a fair proportion of that food at the end of the week.
Times, Sunday Times (2008)
As regards the large increases in gas and electricity bills over the past year, a fair proportion of them has been caused as a direct result of regulation.
Times, Sunday Times (2008)
Indeed, a fair proportion receive more than they are fit to consume.
Scottish Voices 1745-1960 (1990)