Finding the Fourth Proportional to 207,953.94, 311,930.84 and 81,653.70
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Solution
The fourth proportional to 207,953.94, 311,930.84 and 81,653.70 is: 122,480.52
Step by Step Solution
- Step 1: Write the proportion equation
207,953.94 : 311,930.84 = 81,653.70 : x - Step 2: Convert to fraction form
207,953.94/311,930.84 = 81,653.70/x - Step 3: Cross multiply
207,953.94x = 311,930.84 × 81,653.70 - Step 4: Simplify right side
207,953.94x = 25,470,307,230.11 - Step 5: Solve for x
x = 25,470,307,230.11/207,953.94 - Step 6: Final answer
x = 122,480.52
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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.