Finding the Fourth Proportional to 103,091.28, 142,264.14 and 57,769.08
Calculator
Solution
The fourth proportional to 103,091.28, 142,264.14 and 57,769.08 is: 79,720.31
Step by Step Solution
- Step 1: Write the proportion equation
103,091.28 : 142,264.14 = 57,769.08 : x - Step 2: Convert to fraction form
103,091.28/142,264.14 = 57,769.08/x - Step 3: Cross multiply
103,091.28x = 142,264.14 × 57,769.08 - Step 4: Simplify right side
103,091.28x = 8,218,468,484.79 - Step 5: Solve for x
x = 8,218,468,484.79/103,091.28 - Step 6: Final answer
x = 79,720.31
Related Problems
Find fourth proportional to 51,545.64, 71,132.07 and 28,884.54
Half scale
Find fourth proportional to 206,182.56, 284,528.28 and 115,538.16
Double scale
Find fourth proportional to 103,092.28, 142,265.52 and 57,770.08
Similar ratio
Find fourth proportional to 154,636.92, 213,396.21 and 86,653.62
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.