Finding the Fourth Proportional to 236,170.80, 325,908.12 and 128,739.12
Calculator
Solution
The fourth proportional to 236,170.80, 325,908.12 and 128,739.12 is: 177,655.85
Step by Step Solution
- Step 1: Write the proportion equation
236,170.80 : 325,908.12 = 128,739.12 : x - Step 2: Convert to fraction form
236,170.80/325,908.12 = 128,739.12/x - Step 3: Cross multiply
236,170.80x = 325,908.12 × 128,739.12 - Step 4: Simplify right side
236,170.80x = 41,957,124,569.65 - Step 5: Solve for x
x = 41,957,124,569.65/236,170.80 - Step 6: Final answer
x = 177,655.85
Related Problems
Find fourth proportional to 118,085.40, 162,954.06 and 64,369.56
Half scale
Find fourth proportional to 472,341.60, 651,816.24 and 257,478.24
Double scale
Find fourth proportional to 236,171.80, 325,909.50 and 128,740.12
Similar ratio
Find fourth proportional to 354,256.20, 488,862.18 and 193,108.68
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.