The singer’s media personnel said Friday that Carey and Packer got engaged in New York City on Thursday.
The marriage will be Carey’s third. She was previously married to actor-comedian Nick Cannon and record executive Tommy Mottola.
Forbes says 48-year-old Packer’s net worth is $3.5 billion.
Packer has three kids. The 45-year-old Carey gave birth to twins in 2011.
Carey’s hits include “Vision of Love,” ”We Belong Together” and “Hero.”
Packer is the son of late Australian media baron Kerry Packer and is one of that’s country’s leading casino executives.