Finding the Fourth Proportional to 136,843.20, 188,830.21 and 93,859.41
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Solution
The fourth proportional to 136,843.20, 188,830.21 and 93,859.41 is: 129,516.79
Step by Step Solution
- Step 1: Write the proportion equation
136,843.20 : 188,830.21 = 93,859.41 : x - Step 2: Convert to fraction form
136,843.20/188,830.21 = 93,859.41/x - Step 3: Cross multiply
136,843.20x = 188,830.21 × 93,859.41 - Step 4: Simplify right side
136,843.20x = 17,723,491,952.04 - Step 5: Solve for x
x = 17,723,491,952.04/136,843.20 - Step 6: Final answer
x = 129,516.79
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.