Hi Tathina You are right about the ‘tight ship’. To be ‘taken for a ride’ means to be taken advantage of, or deprived of something that should have been yours. So, you could re-write the sentence as ‘You were taken advantage of because you were not well organised’.

Tatinha, In your sentence, I'm not sure what the word 'partner' refers to specifically. 'Partner' often means 'boyfriend/girlfriend' or 'spouse', but sometimes it can mean 'business parter'. Neal is right about the meaning of to be 'taken for a ride'. It sounds as though the writer was trying to say, "Your business partner took advantage of you and/or stole money from your business because you were not well organized financially." To prevent him/her from stealing from the business.

apologies for getting the name wrong, Tatinha!