Finding the Fourth Proportional to 198,504.40, 297,589.21 and 86,099.99
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Solution
The fourth proportional to 198,504.40, 297,589.21 and 86,099.99 is: 129,077.38
Step by Step Solution
- Step 1: Write the proportion equation
198,504.40 : 297,589.21 = 86,099.99 : x - Step 2: Convert to fraction form
198,504.40/297,589.21 = 86,099.99/x - Step 3: Cross multiply
198,504.40x = 297,589.21 × 86,099.99 - Step 4: Simplify right side
198,504.40x = 25,622,428,231.01 - Step 5: Solve for x
x = 25,622,428,231.01/198,504.40 - Step 6: Final answer
x = 129,077.38
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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.