Finding the Fourth Proportional to 91,629.36, 137,099.66 and 54,207.09
Calculator
Solution
The fourth proportional to 91,629.36, 137,099.66 and 54,207.09 is: 81,106.90
Step by Step Solution
- Step 1: Write the proportion equation
91,629.36 : 137,099.66 = 54,207.09 : x - Step 2: Convert to fraction form
91,629.36/137,099.66 = 54,207.09/x - Step 3: Cross multiply
91,629.36x = 137,099.66 × 54,207.09 - Step 4: Simplify right side
91,629.36x = 7,431,773,337.55 - Step 5: Solve for x
x = 7,431,773,337.55/91,629.36 - Step 6: Final answer
x = 81,106.90
Related Problems
Find fourth proportional to 45,814.68, 68,549.83 and 27,103.55
Half scale
Find fourth proportional to 183,258.72, 274,199.31 and 108,414.18
Double scale
Find fourth proportional to 91,630.36, 137,101.15 and 54,208.09
Similar ratio
Find fourth proportional to 137,444.04, 205,649.48 and 81,310.64
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.