Finding the Fourth Proportional to 100,694.93, 138,924.99 and 57,082.80
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Solution
The fourth proportional to 100,694.93, 138,924.99 and 57,082.80 is: 78,754.99
Step by Step Solution
- Step 1: Write the proportion equation
100,694.93 : 138,924.99 = 57,082.80 : x - Step 2: Convert to fraction form
100,694.93/138,924.99 = 57,082.80/x - Step 3: Cross multiply
100,694.93x = 138,924.99 × 57,082.80 - Step 4: Simplify right side
100,694.93x = 7,930,228,230.93 - Step 5: Solve for x
x = 7,930,228,230.93/100,694.93 - Step 6: Final answer
x = 78,754.99
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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.