Finding the Fourth Proportional to 127,879.88, 176,470.74 and 74,161.46
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Solution
The fourth proportional to 127,879.88, 176,470.74 and 74,161.46 is: 102,340.79
Step by Step Solution
- Step 1: Write the proportion equation
127,879.88 : 176,470.74 = 74,161.46 : x - Step 2: Convert to fraction form
127,879.88/176,470.74 = 74,161.46/x - Step 3: Cross multiply
127,879.88x = 176,470.74 × 74,161.46 - Step 4: Simplify right side
127,879.88x = 13,087,327,725.68 - Step 5: Solve for x
x = 13,087,327,725.68/127,879.88 - Step 6: Final answer
x = 102,340.79
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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.