Finding the Fourth Proportional to 209,682.13, 289,388.67 and 124,799.19
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Solution
The fourth proportional to 209,682.13, 289,388.67 and 124,799.19 is: 172,239.15
Step by Step Solution
- Step 1: Write the proportion equation
209,682.13 : 289,388.67 = 124,799.19 : x - Step 2: Convert to fraction form
209,682.13/289,388.67 = 124,799.19/x - Step 3: Cross multiply
209,682.13x = 289,388.67 × 124,799.19 - Step 4: Simplify right side
209,682.13x = 36,115,471,611.18 - Step 5: Solve for x
x = 36,115,471,611.18/209,682.13 - Step 6: Final answer
x = 172,239.15
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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.