Finding the Fourth Proportional to 211,042.97, 291,267.09 and 120,378.15
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Solution
The fourth proportional to 211,042.97, 291,267.09 and 120,378.15 is: 166,137.70
Step by Step Solution
- Step 1: Write the proportion equation
211,042.97 : 291,267.09 = 120,378.15 : x - Step 2: Convert to fraction form
211,042.97/291,267.09 = 120,378.15/x - Step 3: Cross multiply
211,042.97x = 291,267.09 × 120,378.15 - Step 4: Simplify right side
211,042.97x = 35,062,193,450.08 - Step 5: Solve for x
x = 35,062,193,450.08/211,042.97 - Step 6: Final answer
x = 166,137.70
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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.