Finding the Fourth Proportional to 117.58, 162.11 and 101.17
Calculator
Solution
The fourth proportional to 117.58, 162.11 and 101.17 is: 139.50
Step by Step Solution
- Step 1: Write the proportion equation
117.58 : 162.11 = 101.17 : x - Step 2: Convert to fraction form
117.58/162.11 = 101.17/x - Step 3: Cross multiply
117.58x = 162.11 × 101.17 - Step 4: Simplify right side
117.58x = 16,401.72 - Step 5: Solve for x
x = 16,401.72/117.58 - Step 6: Final answer
x = 139.50
Related Problems
Find fourth proportional to 58.79, 81.06 and 50.59
Half scale
Find fourth proportional to 235.15, 324.23 and 202.35
Double scale
Find fourth proportional to 118.58, 163.49 and 102.17
Similar ratio
Find fourth proportional to 176.36, 243.17 and 151.76
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.