Finding the Fourth Proportional to 189,786.54, 261,735.76 and 157,469.97
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Solution
The fourth proportional to 189,786.54, 261,735.76 and 157,469.97 is: 217,167.78
Step by Step Solution
- Step 1: Write the proportion equation
189,786.54 : 261,735.76 = 157,469.97 : x - Step 2: Convert to fraction form
189,786.54/261,735.76 = 157,469.97/x - Step 3: Cross multiply
189,786.54x = 261,735.76 × 157,469.97 - Step 4: Simplify right side
189,786.54x = 41,215,522,275.13 - Step 5: Solve for x
x = 41,215,522,275.13/189,786.54 - Step 6: Final answer
x = 217,167.78
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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.