Finding the Fourth Proportional to 203,921.20, 305,881.80 and 119,721.70
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Solution
The fourth proportional to 203,921.20, 305,881.80 and 119,721.70 is: 179,582.55
Step by Step Solution
- Step 1: Write the proportion equation
203,921.20 : 305,881.80 = 119,721.70 : x - Step 2: Convert to fraction form
203,921.20/305,881.80 = 119,721.70/x - Step 3: Cross multiply
203,921.20x = 305,881.80 × 119,721.70 - Step 4: Simplify right side
203,921.20x = 36,620,689,095.06 - Step 5: Solve for x
x = 36,620,689,095.06/203,921.20 - Step 6: Final answer
x = 179,582.55
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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.