Finding the Fourth Proportional to 189,786.84, 284,640.42 and 71,455.32
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Solution
The fourth proportional to 189,786.84, 284,640.42 and 71,455.32 is: 107,167.98
Step by Step Solution
- Step 1: Write the proportion equation
189,786.84 : 284,640.42 = 71,455.32 : x - Step 2: Convert to fraction form
189,786.84/284,640.42 = 71,455.32/x - Step 3: Cross multiply
189,786.84x = 284,640.42 × 71,455.32 - Step 4: Simplify right side
189,786.84x = 20,339,072,296.03 - Step 5: Solve for x
x = 20,339,072,296.03/189,786.84 - Step 6: Final answer
x = 107,167.98
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.