Finding the Fourth Proportional to 103,487.70, 155,201.50 and 40,293.70
Calculator
Solution
The fourth proportional to 103,487.70, 155,201.50 and 40,293.70 is: 60,428.85
Step by Step Solution
- Step 1: Write the proportion equation
103,487.70 : 155,201.50 = 40,293.70 : x - Step 2: Convert to fraction form
103,487.70/155,201.50 = 40,293.70/x - Step 3: Cross multiply
103,487.70x = 155,201.50 × 40,293.70 - Step 4: Simplify right side
103,487.70x = 6,253,642,680.55 - Step 5: Solve for x
x = 6,253,642,680.55/103,487.70 - Step 6: Final answer
x = 60,428.85
Related Problems
Find fourth proportional to 51,743.85, 77,600.75 and 20,146.85
Half scale
Find fourth proportional to 206,975.40, 310,403 and 80,587.40
Double scale
Find fourth proportional to 103,488.70, 155,203 and 40,294.70
Similar ratio
Find fourth proportional to 155,231.55, 232,802.25 and 60,440.55
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.