Robert Sampson owns a $140,000 townhouse and still has an unpaid mortgage of $110,000. In addition to his mortgage, he has the following liabilities: 

Visa	$565
MasterCard	480
Discover card	395
Education loan	920
Personal bank loan	800
Auto loan	4,250
Total	$7,410

Robert’s net worth (not including his home) is about $21,000. This equity is in mutual funds, an automobile, a coin collection, furniture, and other personal property. What is Robert’s debt-to-equity ratio? Has he reached the upper limit of debt obligations? Explain.