Finding the Fourth Proportional to 121,198.55, 181,354.94 and 71,302.14
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Solution
The fourth proportional to 121,198.55, 181,354.94 and 71,302.14 is: 106,692.66
Step by Step Solution
- Step 1: Write the proportion equation
121,198.55 : 181,354.94 = 71,302.14 : x - Step 2: Convert to fraction form
121,198.55/181,354.94 = 71,302.14/x - Step 3: Cross multiply
121,198.55x = 181,354.94 × 71,302.14 - Step 4: Simplify right side
121,198.55x = 12,930,995,232.44 - Step 5: Solve for x
x = 12,930,995,232.44/121,198.55 - Step 6: Final answer
x = 106,692.66
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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.