Finding the Fourth Proportional to 126.93, 175.19 and 74.48
Calculator
Solution
The fourth proportional to 126.93, 175.19 and 74.48 is: 102.80
Step by Step Solution
- Step 1: Write the proportion equation
126.93 : 175.19 = 74.48 : x - Step 2: Convert to fraction form
126.93/175.19 = 74.48/x - Step 3: Cross multiply
126.93x = 175.19 × 74.48 - Step 4: Simplify right side
126.93x = 13,048.22 - Step 5: Solve for x
x = 13,048.22/126.93 - Step 6: Final answer
x = 102.80
Related Problems
Find fourth proportional to 63.47, 87.59 and 37.24
Half scale
Find fourth proportional to 253.86, 350.37 and 148.97
Double scale
Find fourth proportional to 127.93, 176.57 and 75.48
Similar ratio
Find fourth proportional to 190.40, 262.78 and 111.72
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.