Finding the Fourth Proportional to 120,850.80, 181,204.20 and 74,137.20
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Solution
The fourth proportional to 120,850.80, 181,204.20 and 74,137.20 is: 111,161.63
Step by Step Solution
- Step 1: Write the proportion equation
120,850.80 : 181,204.20 = 74,137.20 : x - Step 2: Convert to fraction form
120,850.80/181,204.20 = 74,137.20/x - Step 3: Cross multiply
120,850.80x = 181,204.20 × 74,137.20 - Step 4: Simplify right side
120,850.80x = 13,433,972,016.24 - Step 5: Solve for x
x = 13,433,972,016.24/120,850.80 - Step 6: Final answer
x = 111,161.63
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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.