# Mathematical proportion and range is the last high- the last low

 P: 76 "if all highs and lows in the market are exact proportions of previous ranges." then can you write the statement; $$x = \frac{a}{b}\times{range}$$ where x is a high, a/b is a mathematical proportion and range is the last high- the last low Is that correct? if not, what would be? Thanks