Finding the Fourth Proportional to 129,828.75, 179,163.69 and 70,212.75
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Solution
The fourth proportional to 129,828.75, 179,163.69 and 70,212.75 is: 96,893.60
Step by Step Solution
- Step 1: Write the proportion equation
129,828.75 : 179,163.69 = 70,212.75 : x - Step 2: Convert to fraction form
129,828.75/179,163.69 = 70,212.75/x - Step 3: Cross multiply
129,828.75x = 179,163.69 × 70,212.75 - Step 4: Simplify right side
129,828.75x = 12,579,575,375.05 - Step 5: Solve for x
x = 12,579,575,375.05/129,828.75 - Step 6: Final answer
x = 96,893.60
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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.