Finding the Fourth Proportional to 141.08, 212.03 and 68.99
Calculator
Solution
The fourth proportional to 141.08, 212.03 and 68.99 is: 103.69
Step by Step Solution
- Step 1: Write the proportion equation
141.08 : 212.03 = 68.99 : x - Step 2: Convert to fraction form
141.08/212.03 = 68.99/x - Step 3: Cross multiply
141.08x = 212.03 × 68.99 - Step 4: Simplify right side
141.08x = 14,628.65 - Step 5: Solve for x
x = 14,628.65/141.08 - Step 6: Final answer
x = 103.69
Related Problems
Find fourth proportional to 70.54, 106.02 and 34.50
Half scale
Find fourth proportional to 282.17, 424.07 and 137.99
Double scale
Find fourth proportional to 142.08, 213.54 and 69.99
Similar ratio
Find fourth proportional to 211.62, 318.05 and 103.49
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.