Finding the Fourth Proportional to 204,891.84, 282,929.19 and 128,542.19
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Solution
The fourth proportional to 204,891.84, 282,929.19 and 128,542.19 is: 177,500.17
Step by Step Solution
- Step 1: Write the proportion equation
204,891.84 : 282,929.19 = 128,542.19 : x - Step 2: Convert to fraction form
204,891.84/282,929.19 = 128,542.19/x - Step 3: Cross multiply
204,891.84x = 282,929.19 × 128,542.19 - Step 4: Simplify right side
204,891.84x = 36,368,336,347.49 - Step 5: Solve for x
x = 36,368,336,347.49/204,891.84 - Step 6: Final answer
x = 177,500.17
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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.