Finding the Fourth Proportional to 149,662.18, 206,538.61 and 85,129.75
Calculator
Solution
The fourth proportional to 149,662.18, 206,538.61 and 85,129.75 is: 117,481.78
Step by Step Solution
- Step 1: Write the proportion equation
149,662.18 : 206,538.61 = 85,129.75 : x - Step 2: Convert to fraction form
149,662.18/206,538.61 = 85,129.75/x - Step 3: Cross multiply
149,662.18x = 206,538.61 × 85,129.75 - Step 4: Simplify right side
149,662.18x = 17,582,579,505.48 - Step 5: Solve for x
x = 17,582,579,505.48/149,662.18 - Step 6: Final answer
x = 117,481.78
Related Problems
Find fourth proportional to 74,831.09, 103,269.30 and 42,564.87
Half scale
Find fourth proportional to 299,324.36, 413,077.22 and 170,259.50
Double scale
Find fourth proportional to 149,663.18, 206,539.99 and 85,130.75
Similar ratio
Find fourth proportional to 224,493.27, 309,807.91 and 127,694.62
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.