Finding the Fourth Proportional to 97.99, 135.30 and 76.12
Calculator
Solution
The fourth proportional to 97.99, 135.30 and 76.12 is: 105.10
Step by Step Solution
- Step 1: Write the proportion equation
97.99 : 135.30 = 76.12 : x - Step 2: Convert to fraction form
97.99/135.30 = 76.12/x - Step 3: Cross multiply
97.99x = 135.30 × 76.12 - Step 4: Simplify right side
97.99x = 10,299.04 - Step 5: Solve for x
x = 10,299.04/97.99 - Step 6: Final answer
x = 105.10
Related Problems
Find fourth proportional to 49.00, 67.65 and 38.06
Half scale
Find fourth proportional to 195.98, 270.60 and 152.24
Double scale
Find fourth proportional to 98.99, 136.68 and 77.12
Similar ratio
Find fourth proportional to 146.99, 202.95 and 114.18
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.