Finding the Fourth Proportional to 154,311.09, 212,944.41 and 86,329.26
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Solution
The fourth proportional to 154,311.09, 212,944.41 and 86,329.26 is: 119,131.64
Step by Step Solution
- Step 1: Write the proportion equation
154,311.09 : 212,944.41 = 86,329.26 : x - Step 2: Convert to fraction form
154,311.09/212,944.41 = 86,329.26/x - Step 3: Cross multiply
154,311.09x = 212,944.41 × 86,329.26 - Step 4: Simplify right side
154,311.09x = 18,383,333,336.44 - Step 5: Solve for x
x = 18,383,333,336.44/154,311.09 - Step 6: Final answer
x = 119,131.64
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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.