Finding the Fourth Proportional to 119.63, 178.97 and 118.75
Calculator
Solution
The fourth proportional to 119.63, 178.97 and 118.75 is: 177.66
Step by Step Solution
- Step 1: Write the proportion equation
119.63 : 178.97 = 118.75 : x - Step 2: Convert to fraction form
119.63/178.97 = 118.75/x - Step 3: Cross multiply
119.63x = 178.97 × 118.75 - Step 4: Simplify right side
119.63x = 21,252.32 - Step 5: Solve for x
x = 21,252.32/119.63 - Step 6: Final answer
x = 177.66
Related Problems
Find fourth proportional to 59.81, 89.48 and 59.37
Half scale
Find fourth proportional to 239.25, 357.94 and 237.50
Double scale
Find fourth proportional to 120.63, 180.46 and 119.75
Similar ratio
Find fourth proportional to 179.44, 268.45 and 178.12
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.