Transactions Above Three Times the Account Average

Return the ids of transactions whose amount is more than three times the average transaction amount of the same account. Order by id.

Table schema

Transactions(id INT PRIMARY KEY, account_id INT, amount INT)

Sample data

id | account_id | amount
1 | 1 | 10
2 | 1 | 10
3 | 1 | 10
4 | 1 | 100
5 | 2 | 20
6 | 2 | 25