Finding the Fourth Proportional to 217,183.74, 299,725.56 and 121,721.19
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Solution
The fourth proportional to 217,183.74, 299,725.56 and 121,721.19 is: 167,981.97
Step by Step Solution
- Step 1: Write the proportion equation
217,183.74 : 299,725.56 = 121,721.19 : x - Step 2: Convert to fraction form
217,183.74/299,725.56 = 121,721.19/x - Step 3: Cross multiply
217,183.74x = 299,725.56 × 121,721.19 - Step 4: Simplify right side
217,183.74x = 36,482,951,836.62 - Step 5: Solve for x
x = 36,482,951,836.62/217,183.74 - Step 6: Final answer
x = 167,981.97
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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.