Finding the Fourth Proportional to 203,862.20, 305,793.30 and 128,082.65
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Solution
The fourth proportional to 203,862.20, 305,793.30 and 128,082.65 is: 192,123.98
Step by Step Solution
- Step 1: Write the proportion equation
203,862.20 : 305,793.30 = 128,082.65 : x - Step 2: Convert to fraction form
203,862.20/305,793.30 = 128,082.65/x - Step 3: Cross multiply
203,862.20x = 305,793.30 × 128,082.65 - Step 4: Simplify right side
203,862.20x = 39,166,816,216.25 - Step 5: Solve for x
x = 39,166,816,216.25/203,862.20 - Step 6: Final answer
x = 192,123.98
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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.