Finding the Fourth Proportional to 209,135.57, 313,526.84 and 90,717.62
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Solution
The fourth proportional to 209,135.57, 313,526.84 and 90,717.62 is: 135,999.86
Step by Step Solution
- Step 1: Write the proportion equation
209,135.57 : 313,526.84 = 90,717.62 : x - Step 2: Convert to fraction form
209,135.57/313,526.84 = 90,717.62/x - Step 3: Cross multiply
209,135.57x = 313,526.84 × 90,717.62 - Step 4: Simplify right side
209,135.57x = 28,442,406,709.70 - Step 5: Solve for x
x = 28,442,406,709.70/209,135.57 - Step 6: Final answer
x = 135,999.86
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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.