$\"\"$

The proportion is $\"\"$ .

Apply cross product property: If $\"\"$ , where $\"\"$ .

$\"\"$

$\"\"$ (Multiply: $\"\"$ ) $\"\"$

$\"\"$ (100 can be written as $\"\"$ )

$\"\"$ (Apply root on each side)

$\"\"$ (Cancel square and root on each side) $\"\"$

The solution is $\"\"$ .