Finding the Fourth Proportional to 112,178.88, 154,823.64 and 71,938.08
Calculator
Solution
The fourth proportional to 112,178.88, 154,823.64 and 71,938.08 is: 99,285.31
Step by Step Solution
- Step 1: Write the proportion equation
112,178.88 : 154,823.64 = 71,938.08 : x - Step 2: Convert to fraction form
112,178.88/154,823.64 = 71,938.08/x - Step 3: Cross multiply
112,178.88x = 154,823.64 × 71,938.08 - Step 4: Simplify right side
112,178.88x = 11,137,715,400.21 - Step 5: Solve for x
x = 11,137,715,400.21/112,178.88 - Step 6: Final answer
x = 99,285.31
Related Problems
Find fourth proportional to 56,089.44, 77,411.82 and 35,969.04
Half scale
Find fourth proportional to 224,357.76, 309,647.28 and 143,876.16
Double scale
Find fourth proportional to 112,179.88, 154,825.02 and 71,939.08
Similar ratio
Find fourth proportional to 168,268.32, 232,235.46 and 107,907.12
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.