Finding the Fourth Proportional to 164,239.20, 246,358.80 and 128,809.80
Calculator
Solution
The fourth proportional to 164,239.20, 246,358.80 and 128,809.80 is: 193,214.70
Step by Step Solution
- Step 1: Write the proportion equation
164,239.20 : 246,358.80 = 128,809.80 : x - Step 2: Convert to fraction form
164,239.20/246,358.80 = 128,809.80/x - Step 3: Cross multiply
164,239.20x = 246,358.80 × 128,809.80 - Step 4: Simplify right side
164,239.20x = 31,733,427,756.24 - Step 5: Solve for x
x = 31,733,427,756.24/164,239.20 - Step 6: Final answer
x = 193,214.70
Related Problems
Find fourth proportional to 82,119.60, 123,179.40 and 64,404.90
Half scale
Find fourth proportional to 328,478.40, 492,717.60 and 257,619.60
Double scale
Find fourth proportional to 164,240.20, 246,360.30 and 128,810.80
Similar ratio
Find fourth proportional to 246,358.80, 369,538.20 and 193,214.70
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.