Finding the Fourth Proportional to 207,102.20, 310,883.70 and 128,305.40
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Solution
The fourth proportional to 207,102.20, 310,883.70 and 128,305.40 is: 192,600.84
Step by Step Solution
- Step 1: Write the proportion equation
207,102.20 : 310,883.70 = 128,305.40 : x - Step 2: Convert to fraction form
207,102.20/310,883.70 = 128,305.40/x - Step 3: Cross multiply
207,102.20x = 310,883.70 × 128,305.40 - Step 4: Simplify right side
207,102.20x = 39,888,057,481.98 - Step 5: Solve for x
x = 39,888,057,481.98/207,102.20 - Step 6: Final answer
x = 192,600.84
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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.