Finding the Fourth Proportional to 198,505.40, 297,590.71 and 86,100.99
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Solution
The fourth proportional to 198,505.40, 297,590.71 and 86,100.99 is: 129,078.88
Step by Step Solution
- Step 1: Write the proportion equation
198,505.40 : 297,590.71 = 86,100.99 : x - Step 2: Convert to fraction form
198,505.40/297,590.71 = 86,100.99/x - Step 3: Cross multiply
198,505.40x = 297,590.71 × 86,100.99 - Step 4: Simplify right side
198,505.40x = 25,622,854,745.80 - Step 5: Solve for x
x = 25,622,854,745.80/198,505.40 - Step 6: Final answer
x = 129,078.88
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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.