Finding the Fourth Proportional to 221,512.95, 305,687.79 and 120,910.95
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Solution
The fourth proportional to 221,512.95, 305,687.79 and 120,910.95 is: 166,857.07
Step by Step Solution
- Step 1: Write the proportion equation
221,512.95 : 305,687.79 = 120,910.95 : x - Step 2: Convert to fraction form
221,512.95/305,687.79 = 120,910.95/x - Step 3: Cross multiply
221,512.95x = 305,687.79 × 120,910.95 - Step 4: Simplify right side
221,512.95x = 36,961,001,092.30 - Step 5: Solve for x
x = 36,961,001,092.30/221,512.95 - Step 6: Final answer
x = 166,857.07
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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.