Finding the Fourth Proportional to 211,491.60, 317,163.61 and 85,099.10
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Solution
The fourth proportional to 211,491.60, 317,163.61 and 85,099.10 is: 127,618.95
Step by Step Solution
- Step 1: Write the proportion equation
211,491.60 : 317,163.61 = 85,099.10 : x - Step 2: Convert to fraction form
211,491.60/317,163.61 = 85,099.10/x - Step 3: Cross multiply
211,491.60x = 317,163.61 × 85,099.10 - Step 4: Simplify right side
211,491.60x = 26,990,335,965.19 - Step 5: Solve for x
x = 26,990,335,965.19/211,491.60 - Step 6: Final answer
x = 127,618.95
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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.