Finding the Fourth Proportional to 173.19, 239.02 and 107.71
Calculator
Solution
The fourth proportional to 173.19, 239.02 and 107.71 is: 148.65
Step by Step Solution
- Step 1: Write the proportion equation
173.19 : 239.02 = 107.71 : x - Step 2: Convert to fraction form
173.19/239.02 = 107.71/x - Step 3: Cross multiply
173.19x = 239.02 × 107.71 - Step 4: Simplify right side
173.19x = 25,744.84 - Step 5: Solve for x
x = 25,744.84/173.19 - Step 6: Final answer
x = 148.65
Related Problems
Find fourth proportional to 86.60, 119.51 and 53.86
Half scale
Find fourth proportional to 346.38, 478.04 and 215.42
Double scale
Find fourth proportional to 174.19, 240.40 and 108.71
Similar ratio
Find fourth proportional to 259.79, 358.53 and 161.57
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.