Finding the Fourth Proportional to 203,503.68, 305,178.84 and 85,183.20
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Solution
The fourth proportional to 203,503.68, 305,178.84 and 85,183.20 is: 127,742.70
Step by Step Solution
- Step 1: Write the proportion equation
203,503.68 : 305,178.84 = 85,183.20 : x - Step 2: Convert to fraction form
203,503.68/305,178.84 = 85,183.20/x - Step 3: Cross multiply
203,503.68x = 305,178.84 × 85,183.20 - Step 4: Simplify right side
203,503.68x = 25,996,110,163.49 - Step 5: Solve for x
x = 25,996,110,163.49/203,503.68 - Step 6: Final answer
x = 127,742.70
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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.