Finding the Fourth Proportional to 203,020.43, 280,103.79 and 118,121.09
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Solution
The fourth proportional to 203,020.43, 280,103.79 and 118,121.09 is: 162,969.63
Step by Step Solution
- Step 1: Write the proportion equation
203,020.43 : 280,103.79 = 118,121.09 : x - Step 2: Convert to fraction form
203,020.43/280,103.79 = 118,121.09/x - Step 3: Cross multiply
203,020.43x = 280,103.79 × 118,121.09 - Step 4: Simplify right side
203,020.43x = 33,086,164,397.33 - Step 5: Solve for x
x = 33,086,164,397.33/203,020.43 - Step 6: Final answer
x = 162,969.63
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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.