Finding the Fourth Proportional to 209,943.18, 289,634.36 and 123,867.99
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Solution
The fourth proportional to 209,943.18, 289,634.36 and 123,867.99 is: 170,886.36
Step by Step Solution
- Step 1: Write the proportion equation
209,943.18 : 289,634.36 = 123,867.99 : x - Step 2: Convert to fraction form
209,943.18/289,634.36 = 123,867.99/x - Step 3: Cross multiply
209,943.18x = 289,634.36 × 123,867.99 - Step 4: Simplify right side
209,943.18x = 35,876,425,388.80 - Step 5: Solve for x
x = 35,876,425,388.80/209,943.18 - Step 6: Final answer
x = 170,886.36
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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.