Finding the Fourth Proportional to 82,938.20, 124,407.30 and 68,163.80
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Solution
The fourth proportional to 82,938.20, 124,407.30 and 68,163.80 is: 102,245.70
Step by Step Solution
- Step 1: Write the proportion equation
82,938.20 : 124,407.30 = 68,163.80 : x - Step 2: Convert to fraction form
82,938.20/124,407.30 = 68,163.80/x - Step 3: Cross multiply
82,938.20x = 124,407.30 × 68,163.80 - Step 4: Simplify right side
82,938.20x = 8,480,074,315.74 - Step 5: Solve for x
x = 8,480,074,315.74/82,938.20 - Step 6: Final answer
x = 102,245.70
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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.