Finding the Fourth Proportional to 82,161.06, 122,657.94 and 79,245.06
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Solution
The fourth proportional to 82,161.06, 122,657.94 and 79,245.06 is: 118,304.65
Step by Step Solution
- Step 1: Write the proportion equation
82,161.06 : 122,657.94 = 79,245.06 : x - Step 2: Convert to fraction form
82,161.06/122,657.94 = 79,245.06/x - Step 3: Cross multiply
82,161.06x = 122,657.94 × 79,245.06 - Step 4: Simplify right side
82,161.06x = 9,720,035,814.78 - Step 5: Solve for x
x = 9,720,035,814.78/82,161.06 - Step 6: Final answer
x = 118,304.65
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.