Finding the Fourth Proportional to 112,161.82, 154,765.62 and 66,838.68
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Solution
The fourth proportional to 112,161.82, 154,765.62 and 66,838.68 is: 92,226.84
Step by Step Solution
- Step 1: Write the proportion equation
112,161.82 : 154,765.62 = 66,838.68 : x - Step 2: Convert to fraction form
112,161.82/154,765.62 = 66,838.68/x - Step 3: Cross multiply
112,161.82x = 154,765.62 × 66,838.68 - Step 4: Simplify right side
112,161.82x = 10,344,329,750.18 - Step 5: Solve for x
x = 10,344,329,750.18/112,161.82 - Step 6: Final answer
x = 92,226.84
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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.