Finding the Fourth Proportional to 100,204.81, 138,277.70 and 54,882.99
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Solution
The fourth proportional to 100,204.81, 138,277.70 and 54,882.99 is: 75,735.82
Step by Step Solution
- Step 1: Write the proportion equation
100,204.81 : 138,277.70 = 54,882.99 : x - Step 2: Convert to fraction form
100,204.81/138,277.70 = 54,882.99/x - Step 3: Cross multiply
100,204.81x = 138,277.70 × 54,882.99 - Step 4: Simplify right side
100,204.81x = 7,589,093,660.62 - Step 5: Solve for x
x = 7,589,093,660.62/100,204.81 - Step 6: Final answer
x = 75,735.82
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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.