Finding the Third Proportional to 119 and 143
Calculator
Solution
The third proportional to 119 and 143 is: 171.84
Step by Step Solution
- Step 1: Write the proportion equation
119 : 143 = 143 : x - Step 2: Convert to fraction form
119/143 = 143/x - Step 3: Cross multiply
119x = 143 × 143 - Step 4: Simplify right side
119x = 20,449 - Step 5: Solve for x
x = 20,449/119 - Step 6: Final answer
x = 171.84
Related Problems
Find third proportional to 59.50 and 71.50
Half scale
Find third proportional to 238 and 286
Double scale
Find third proportional to 121 and 145
Similar ratio
Find third proportional to 178.50 and 214.50
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.