Finding the Fourth Proportional to 128,239.20, 192,369.74 and 33,481.96
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Solution
The fourth proportional to 128,239.20, 192,369.74 and 33,481.96 is: 50,225.79
Step by Step Solution
- Step 1: Write the proportion equation
128,239.20 : 192,369.74 = 33,481.96 : x - Step 2: Convert to fraction form
128,239.20/192,369.74 = 33,481.96/x - Step 3: Cross multiply
128,239.20x = 192,369.74 × 33,481.96 - Step 4: Simplify right side
128,239.20x = 6,440,915,291.56 - Step 5: Solve for x
x = 6,440,915,291.56/128,239.20 - Step 6: Final answer
x = 50,225.79
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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.