Finding the Fourth Proportional to 116,382.07, 160,668.63 and 78,341.62
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Solution
The fourth proportional to 116,382.07, 160,668.63 and 78,341.62 is: 108,152.75
Step by Step Solution
- Step 1: Write the proportion equation
116,382.07 : 160,668.63 = 78,341.62 : x - Step 2: Convert to fraction form
116,382.07/160,668.63 = 78,341.62/x - Step 3: Cross multiply
116,382.07x = 160,668.63 × 78,341.62 - Step 4: Simplify right side
116,382.07x = 12,587,040,757.38 - Step 5: Solve for x
x = 12,587,040,757.38/116,382.07 - Step 6: Final answer
x = 108,152.75
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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.