Finding the Fourth Proportional to 122,163.20, 168,577.44 and 71,852.48
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Solution
The fourth proportional to 122,163.20, 168,577.44 and 71,852.48 is: 99,151.85
Step by Step Solution
- Step 1: Write the proportion equation
122,163.20 : 168,577.44 = 71,852.48 : x - Step 2: Convert to fraction form
122,163.20/168,577.44 = 71,852.48/x - Step 3: Cross multiply
122,163.20x = 168,577.44 × 71,852.48 - Step 4: Simplify right side
122,163.20x = 12,112,707,136.05 - Step 5: Solve for x
x = 12,112,707,136.05/122,163.20 - Step 6: Final answer
x = 99,151.85
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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.