Finding the Fourth Proportional to 209,945.18, 289,637.11 and 123,869.99
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Solution
The fourth proportional to 209,945.18, 289,637.11 and 123,869.99 is: 170,889.11
Step by Step Solution
- Step 1: Write the proportion equation
209,945.18 : 289,637.11 = 123,869.99 : x - Step 2: Convert to fraction form
209,945.18/289,637.11 = 123,869.99/x - Step 3: Cross multiply
209,945.18x = 289,637.11 × 123,869.99 - Step 4: Simplify right side
209,945.18x = 35,877,345,919.33 - Step 5: Solve for x
x = 35,877,345,919.33/209,945.18 - Step 6: Final answer
x = 170,889.11
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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.