Finding the Fourth Proportional to 218,135.70, 327,201.09 and 85,109.37
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Solution
The fourth proportional to 218,135.70, 327,201.09 and 85,109.37 is: 127,663.09
Step by Step Solution
- Step 1: Write the proportion equation
218,135.70 : 327,201.09 = 85,109.37 : x - Step 2: Convert to fraction form
218,135.70/327,201.09 = 85,109.37/x - Step 3: Cross multiply
218,135.70x = 327,201.09 × 85,109.37 - Step 4: Simplify right side
218,135.70x = 27,847,876,997.21 - Step 5: Solve for x
x = 27,847,876,997.21/218,135.70 - Step 6: Final answer
x = 127,663.09
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.