Finding the Fourth Proportional to 83.51, 125.06 and 74.80
Calculator
Solution
The fourth proportional to 83.51, 125.06 and 74.80 is: 112.02
Step by Step Solution
- Step 1: Write the proportion equation
83.51 : 125.06 = 74.80 : x - Step 2: Convert to fraction form
83.51/125.06 = 74.80/x - Step 3: Cross multiply
83.51x = 125.06 × 74.80 - Step 4: Simplify right side
83.51x = 9,354.27 - Step 5: Solve for x
x = 9,354.27/83.51 - Step 6: Final answer
x = 112.02
Related Problems
Find fourth proportional to 41.75, 62.53 and 37.40
Half scale
Find fourth proportional to 167.02, 250.11 and 149.60
Double scale
Find fourth proportional to 84.51, 126.55 and 75.80
Similar ratio
Find fourth proportional to 125.26, 187.58 and 112.20
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.