Finding the Fourth Proportional to 206,619.26, 285,112.70 and 115,985.19
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Solution
The fourth proportional to 206,619.26, 285,112.70 and 115,985.19 is: 160,047.28
Step by Step Solution
- Step 1: Write the proportion equation
206,619.26 : 285,112.70 = 115,985.19 : x - Step 2: Convert to fraction form
206,619.26/285,112.70 = 115,985.19/x - Step 3: Cross multiply
206,619.26x = 285,112.70 × 115,985.19 - Step 4: Simplify right side
206,619.26x = 33,068,850,680.91 - Step 5: Solve for x
x = 33,068,850,680.91/206,619.26 - Step 6: Final answer
x = 160,047.28
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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.