Finding the Fourth Proportional to 205,195.86, 283,174.92 and 128,718.18
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Solution
The fourth proportional to 205,195.86, 283,174.92 and 128,718.18 is: 177,633.99
Step by Step Solution
- Step 1: Write the proportion equation
205,195.86 : 283,174.92 = 128,718.18 : x - Step 2: Convert to fraction form
205,195.86/283,174.92 = 128,718.18/x - Step 3: Cross multiply
205,195.86x = 283,174.92 × 128,718.18 - Step 4: Simplify right side
205,195.86x = 36,449,760,324.05 - Step 5: Solve for x
x = 36,449,760,324.05/205,195.86 - Step 6: Final answer
x = 177,633.99
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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.