Finding the Fourth Proportional to 231,060.09, 318,831.37 and 129,072.94
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Solution
The fourth proportional to 231,060.09, 318,831.37 and 129,072.94 is: 178,103.03
Step by Step Solution
- Step 1: Write the proportion equation
231,060.09 : 318,831.37 = 129,072.94 : x - Step 2: Convert to fraction form
231,060.09/318,831.37 = 129,072.94/x - Step 3: Cross multiply
231,060.09x = 318,831.37 × 129,072.94 - Step 4: Simplify right side
231,060.09x = 41,152,501,493.05 - Step 5: Solve for x
x = 41,152,501,493.05/231,060.09 - Step 6: Final answer
x = 178,103.03
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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.