Finding the Fourth Proportional to 207,891.10, 311,836.65 and 74,775.70
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Solution
The fourth proportional to 207,891.10, 311,836.65 and 74,775.70 is: 112,163.55
Step by Step Solution
- Step 1: Write the proportion equation
207,891.10 : 311,836.65 = 74,775.70 : x - Step 2: Convert to fraction form
207,891.10/311,836.65 = 74,775.70/x - Step 3: Cross multiply
207,891.10x = 311,836.65 × 74,775.70 - Step 4: Simplify right side
207,891.10x = 23,317,803,789.41 - Step 5: Solve for x
x = 23,317,803,789.41/207,891.10 - Step 6: Final answer
x = 112,163.55
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1.5x scale
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.