Finding the Fourth Proportional to 129,620.97, 193,992.33 and 79,732.65
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Solution
The fourth proportional to 129,620.97, 193,992.33 and 79,732.65 is: 119,328.86
Step by Step Solution
- Step 1: Write the proportion equation
129,620.97 : 193,992.33 = 79,732.65 : x - Step 2: Convert to fraction form
129,620.97/193,992.33 = 79,732.65/x - Step 3: Cross multiply
129,620.97x = 193,992.33 × 79,732.65 - Step 4: Simplify right side
129,620.97x = 15,467,522,550.57 - Step 5: Solve for x
x = 15,467,522,550.57/129,620.97 - Step 6: Final answer
x = 119,328.86
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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.