Finding the Fourth Proportional to 157,876.44, 217,872.62 and 86,260.90
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Solution
The fourth proportional to 157,876.44, 217,872.62 and 86,260.90 is: 119,041.75
Step by Step Solution
- Step 1: Write the proportion equation
157,876.44 : 217,872.62 = 86,260.90 : x - Step 2: Convert to fraction form
157,876.44/217,872.62 = 86,260.90/x - Step 3: Cross multiply
157,876.44x = 217,872.62 × 86,260.90 - Step 4: Simplify right side
157,876.44x = 18,793,888,286.56 - Step 5: Solve for x
x = 18,793,888,286.56/157,876.44 - Step 6: Final answer
x = 119,041.75
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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.