Finding the Fourth Proportional to 221,512.12, 305,686.68 and 120,910.12
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Solution
The fourth proportional to 221,512.12, 305,686.68 and 120,910.12 is: 166,855.94
Step by Step Solution
- Step 1: Write the proportion equation
221,512.12 : 305,686.68 = 120,910.12 : x - Step 2: Convert to fraction form
221,512.12/305,686.68 = 120,910.12/x - Step 3: Cross multiply
221,512.12x = 305,686.68 × 120,910.12 - Step 4: Simplify right side
221,512.12x = 36,960,613,161.20 - Step 5: Solve for x
x = 36,960,613,161.20/221,512.12 - Step 6: Final answer
x = 166,855.94
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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.