Finding the Fourth Proportional to 189,379.40, 261,343.42 and 121,396.32
Calculator
Solution
The fourth proportional to 189,379.40, 261,343.42 and 121,396.32 is: 167,526.82
Step by Step Solution
- Step 1: Write the proportion equation
189,379.40 : 261,343.42 = 121,396.32 : x - Step 2: Convert to fraction form
189,379.40/261,343.42 = 121,396.32/x - Step 3: Cross multiply
189,379.40x = 261,343.42 × 121,396.32 - Step 4: Simplify right side
189,379.40x = 31,726,129,444.21 - Step 5: Solve for x
x = 31,726,129,444.21/189,379.40 - Step 6: Final answer
x = 167,526.82
Related Problems
Find fourth proportional to 94,689.70, 130,671.71 and 60,698.16
Half scale
Find fourth proportional to 378,758.80, 522,686.84 and 242,792.64
Double scale
Find fourth proportional to 189,380.40, 261,344.80 and 121,397.32
Similar ratio
Find fourth proportional to 284,069.10, 392,015.13 and 182,094.48
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.