CREATE TABLE table_21112 ("Rank" FLOAT, "Company" TEXT, "Headquarters" TEXT, "Industry" TEXT, "Sales  ( billion $ ) " TEXT, "Profits  ( billion $ ) " TEXT, "Assets  ( billion $ ) " TEXT, "Market Value  ( billion $ ) " TEXT)

What are the profits (in billions) of the company with a market value of 172.9 billion?
SELECT "Profits (billion $)" FROM table_21112 WHERE "Market Value (billion $)" = '172.9'
SELECT "Profits (billion $)" FROM "table_21112" WHERE "Market Value (billion $)" = '172.9'