How many years did it take for children of israel to reach the promised land from the day the Lord put his word in the mouth of balaam?
Answer:
It took less than a year. The prophecy of Balaam was given during the fortieth year of the Children of Israel’s sojourn in the wilderness, and the entry into the Promised Land came soon after.
Sources: Aharon dies in chap. 20 of Numbers, before the episode of Balaam, which must therefore have been in the fortieth year.