Finding the Fourth Proportional to 114.21, 171.97 and 83.99
Calculator
Solution
The fourth proportional to 114.21, 171.97 and 83.99 is: 126.46
Step by Step Solution
- Step 1: Write the proportion equation
114.21 : 171.97 = 83.99 : x - Step 2: Convert to fraction form
114.21/171.97 = 83.99/x - Step 3: Cross multiply
114.21x = 171.97 × 83.99 - Step 4: Simplify right side
114.21x = 14,442.90 - Step 5: Solve for x
x = 14,442.90/114.21 - Step 6: Final answer
x = 126.46
Related Problems
Find fourth proportional to 57.10, 85.99 and 41.99
Half scale
Find fourth proportional to 228.42, 343.94 and 167.97
Double scale
Find fourth proportional to 115.21, 173.48 and 84.99
Similar ratio
Find fourth proportional to 171.31, 257.96 and 125.98
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.