Finding the Fourth Proportional to 201,542.10, 278,035.09 and 129,945.19
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Solution
The fourth proportional to 201,542.10, 278,035.09 and 129,945.19 is: 179,264.39
Step by Step Solution
- Step 1: Write the proportion equation
201,542.10 : 278,035.09 = 129,945.19 : x - Step 2: Convert to fraction form
201,542.10/278,035.09 = 129,945.19/x - Step 3: Cross multiply
201,542.10x = 278,035.09 × 129,945.19 - Step 4: Simplify right side
201,542.10x = 36,129,322,229.79 - Step 5: Solve for x
x = 36,129,322,229.79/201,542.10 - Step 6: Final answer
x = 179,264.39
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1.5x scale
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.