Finding the Fourth Proportional to 206,939.20, 310,481.70 and 101,687.80
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Solution
The fourth proportional to 206,939.20, 310,481.70 and 101,687.80 is: 152,567.52
Step by Step Solution
- Step 1: Write the proportion equation
206,939.20 : 310,481.70 = 101,687.80 : x - Step 2: Convert to fraction form
206,939.20/310,481.70 = 101,687.80/x - Step 3: Cross multiply
206,939.20x = 310,481.70 × 101,687.80 - Step 4: Simplify right side
206,939.20x = 31,572,201,013.26 - Step 5: Solve for x
x = 31,572,201,013.26/206,939.20 - Step 6: Final answer
x = 152,567.52
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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.