Article text is too narrow on all articles

I am having trouble with the width of the article text on all my articles. Please refer to attached screenshot. I need the text to extend more to the right margin. Can anyone help me with where to fix this issue?
Thanks
Jo

Joomla 2.5
php 5.3.13

Send link so we could inspect styles

thank you for checking on this

the link for this page is:
devl.transformationaltimes.com/index.php/qigong

Open index.php of template, find this:

$blogWidth = $contentWidth - 143;

change it to:

$blogWidth = $contentWidth - 23;