Finding the Fourth Proportional to 206,657.49, 285,321.81 and 126,131.70
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Solution
The fourth proportional to 206,657.49, 285,321.81 and 126,131.70 is: 174,143.82
Step by Step Solution
- Step 1: Write the proportion equation
206,657.49 : 285,321.81 = 126,131.70 : x - Step 2: Convert to fraction form
206,657.49/285,321.81 = 126,131.70/x - Step 3: Cross multiply
206,657.49x = 285,321.81 × 126,131.70 - Step 4: Simplify right side
206,657.49x = 35,988,124,942.38 - Step 5: Solve for x
x = 35,988,124,942.38/206,657.49 - Step 6: Final answer
x = 174,143.82
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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.