Finding the Fourth Proportional to 136,375.68, 188,249.76 and 79,805.28
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Solution
The fourth proportional to 136,375.68, 188,249.76 and 79,805.28 is: 110,161.32
Step by Step Solution
- Step 1: Write the proportion equation
136,375.68 : 188,249.76 = 79,805.28 : x - Step 2: Convert to fraction form
136,375.68/188,249.76 = 79,805.28/x - Step 3: Cross multiply
136,375.68x = 188,249.76 × 79,805.28 - Step 4: Simplify right side
136,375.68x = 15,023,324,806.73 - Step 5: Solve for x
x = 15,023,324,806.73/136,375.68 - Step 6: Final answer
x = 110,161.32
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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.