Finding the Fourth Proportional to 154,198.88, 212,821.68 and 89,688.08
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Solution
The fourth proportional to 154,198.88, 212,821.68 and 89,688.08 is: 123,785.39
Step by Step Solution
- Step 1: Write the proportion equation
154,198.88 : 212,821.68 = 89,688.08 : x - Step 2: Convert to fraction form
154,198.88/212,821.68 = 89,688.08/x - Step 3: Cross multiply
154,198.88x = 212,821.68 × 89,688.08 - Step 4: Simplify right side
154,198.88x = 19,087,567,861.57 - Step 5: Solve for x
x = 19,087,567,861.57/154,198.88 - Step 6: Final answer
x = 123,785.39
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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.