Finding the Fourth Proportional to 129,378.26, 194,114.64 and 54,517.16
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Solution
The fourth proportional to 129,378.26, 194,114.64 and 54,517.16 is: 81,795.65
Step by Step Solution
- Step 1: Write the proportion equation
129,378.26 : 194,114.64 = 54,517.16 : x - Step 2: Convert to fraction form
129,378.26/194,114.64 = 54,517.16/x - Step 3: Cross multiply
129,378.26x = 194,114.64 × 54,517.16 - Step 4: Simplify right side
129,378.26x = 10,582,578,887.22 - Step 5: Solve for x
x = 10,582,578,887.22/129,378.26 - Step 6: Final answer
x = 81,795.65
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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.