Finding the Fourth Proportional to 122,694.84, 169,311.12 and 68,979.12
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Solution
The fourth proportional to 122,694.84, 169,311.12 and 68,979.12 is: 95,186.82
Step by Step Solution
- Step 1: Write the proportion equation
122,694.84 : 169,311.12 = 68,979.12 : x - Step 2: Convert to fraction form
122,694.84/169,311.12 = 68,979.12/x - Step 3: Cross multiply
122,694.84x = 169,311.12 × 68,979.12 - Step 4: Simplify right side
122,694.84x = 11,678,932,063.81 - Step 5: Solve for x
x = 11,678,932,063.81/122,694.84 - Step 6: Final answer
x = 95,186.82
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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.