Finding the Fourth Proportional to 124,878.68, 187,319.78 and 40,639.28
Calculator
Solution
The fourth proportional to 124,878.68, 187,319.78 and 40,639.28 is: 60,959.49
Step by Step Solution
- Step 1: Write the proportion equation
124,878.68 : 187,319.78 = 40,639.28 : x - Step 2: Convert to fraction form
124,878.68/187,319.78 = 40,639.28/x - Step 3: Cross multiply
124,878.68x = 187,319.78 × 40,639.28 - Step 4: Simplify right side
124,878.68x = 7,612,540,988.96 - Step 5: Solve for x
x = 7,612,540,988.96/124,878.68 - Step 6: Final answer
x = 60,959.49
Related Problems
Find fourth proportional to 62,439.34, 93,659.89 and 20,319.64
Half scale
Find fourth proportional to 249,757.36, 374,639.56 and 81,278.56
Double scale
Find fourth proportional to 124,879.68, 187,321.28 and 40,640.28
Similar ratio
Find fourth proportional to 187,318.02, 280,979.67 and 60,958.92
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.