Finding the Fourth Proportional to 197,120.14, 271,930.66 and 129,107.19
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Solution
The fourth proportional to 197,120.14, 271,930.66 and 129,107.19 is: 178,105.61
Step by Step Solution
- Step 1: Write the proportion equation
197,120.14 : 271,930.66 = 129,107.19 : x - Step 2: Convert to fraction form
197,120.14/271,930.66 = 129,107.19/x - Step 3: Cross multiply
197,120.14x = 271,930.66 × 129,107.19 - Step 4: Simplify right side
197,120.14x = 35,108,203,387.45 - Step 5: Solve for x
x = 35,108,203,387.45/197,120.14 - Step 6: Final answer
x = 178,105.61
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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.