Finding the Fourth Proportional to 201,665.75, 278,293.83 and 111,020.99
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Solution
The fourth proportional to 201,665.75, 278,293.83 and 111,020.99 is: 153,206.27
Step by Step Solution
- Step 1: Write the proportion equation
201,665.75 : 278,293.83 = 111,020.99 : x - Step 2: Convert to fraction form
201,665.75/278,293.83 = 111,020.99/x - Step 3: Cross multiply
201,665.75x = 278,293.83 × 111,020.99 - Step 4: Simplify right side
201,665.75x = 30,896,456,517.49 - Step 5: Solve for x
x = 30,896,456,517.49/201,665.75 - Step 6: Final answer
x = 153,206.27
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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.