Finding the Fourth Proportional to 109.14, 163.70 and 36.99
Calculator
Solution
The fourth proportional to 109.14, 163.70 and 36.99 is: 55.48
Step by Step Solution
- Step 1: Write the proportion equation
109.14 : 163.70 = 36.99 : x - Step 2: Convert to fraction form
109.14/163.70 = 36.99/x - Step 3: Cross multiply
109.14x = 163.70 × 36.99 - Step 4: Simplify right side
109.14x = 6,055.26 - Step 5: Solve for x
x = 6,055.26/109.14 - Step 6: Final answer
x = 55.48
Related Problems
Find fourth proportional to 54.57, 81.85 and 18.50
Half scale
Find fourth proportional to 218.27, 327.40 and 73.98
Double scale
Find fourth proportional to 110.14, 165.20 and 37.99
Similar ratio
Find fourth proportional to 163.70, 245.55 and 55.49
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.