Find Least Common Multiple of 66, 103 and 43 using ladder method..

LCM( 66, 103, 43 ) = 292314

Step 1 : Place the numbers inside division bar:

Step 2 : Find a prime number which can divide at least two of your numbers.

Since there are no primes that divides at least two of given numbers, we conclude that the LCM is a product of starting numbers.

LCM = 66 · 103 · 43 = 292314

This solution can be visualized using a Venn diagram.

The LCM is equal to the product of all the numbers on the diagram.