Finding the Fourth Proportional to 129,992.42, 194,960.46 and 75,920.96
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Solution
The fourth proportional to 129,992.42, 194,960.46 and 75,920.96 is: 113,864.99
Step by Step Solution
- Step 1: Write the proportion equation
129,992.42 : 194,960.46 = 75,920.96 : x - Step 2: Convert to fraction form
129,992.42/194,960.46 = 75,920.96/x - Step 3: Cross multiply
129,992.42x = 194,960.46 × 75,920.96 - Step 4: Simplify right side
129,992.42x = 14,801,585,285.24 - Step 5: Solve for x
x = 14,801,585,285.24/129,992.42 - Step 6: Final answer
x = 113,864.99
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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.