Finding the Fourth Proportional to 112,975.21, 155,900.52 and 61,986.79
Calculator
Solution
The fourth proportional to 112,975.21, 155,900.52 and 61,986.79 is: 85,538.88
Step by Step Solution
- Step 1: Write the proportion equation
112,975.21 : 155,900.52 = 61,986.79 : x - Step 2: Convert to fraction form
112,975.21/155,900.52 = 61,986.79/x - Step 3: Cross multiply
112,975.21x = 155,900.52 × 61,986.79 - Step 4: Simplify right side
112,975.21x = 9,663,772,794.13 - Step 5: Solve for x
x = 9,663,772,794.13/112,975.21 - Step 6: Final answer
x = 85,538.88
Related Problems
Find fourth proportional to 56,487.61, 77,950.26 and 30,993.40
Half scale
Find fourth proportional to 225,950.42, 311,801.04 and 123,973.58
Double scale
Find fourth proportional to 112,976.21, 155,901.90 and 61,987.79
Similar ratio
Find fourth proportional to 169,462.82, 233,850.78 and 92,980.19
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.