Finding the Fourth Proportional to 206,486.16, 284,916.36 and 121,620.12
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Solution
The fourth proportional to 206,486.16, 284,916.36 and 121,620.12 is: 167,815.42
Step by Step Solution
- Step 1: Write the proportion equation
206,486.16 : 284,916.36 = 121,620.12 : x - Step 2: Convert to fraction form
206,486.16/284,916.36 = 121,620.12/x - Step 3: Cross multiply
206,486.16x = 284,916.36 × 121,620.12 - Step 4: Simplify right side
206,486.16x = 34,651,561,893.16 - Step 5: Solve for x
x = 34,651,561,893.16/206,486.16 - Step 6: Final answer
x = 167,815.42
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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.