Finding the Fourth Proportional to 206,490.16, 284,921.88 and 121,624.12
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Solution
The fourth proportional to 206,490.16, 284,921.88 and 121,624.12 is: 167,820.94
Step by Step Solution
- Step 1: Write the proportion equation
206,490.16 : 284,921.88 = 121,624.12 : x - Step 2: Convert to fraction form
206,490.16/284,921.88 = 121,624.12/x - Step 3: Cross multiply
206,490.16x = 284,921.88 × 121,624.12 - Step 4: Simplify right side
206,490.16x = 34,653,372,923.75 - Step 5: Solve for x
x = 34,653,372,923.75/206,490.16 - Step 6: Final answer
x = 167,820.94
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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.