Finding the Fourth Proportional to 206,539.14, 285,205.77 and 129,147.42
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Solution
The fourth proportional to 206,539.14, 285,205.77 and 129,147.42 is: 178,337.09
Step by Step Solution
- Step 1: Write the proportion equation
206,539.14 : 285,205.77 = 129,147.42 : x - Step 2: Convert to fraction form
206,539.14/285,205.77 = 129,147.42/x - Step 3: Cross multiply
206,539.14x = 285,205.77 × 129,147.42 - Step 4: Simplify right side
206,539.14x = 36,833,588,718.88 - Step 5: Solve for x
x = 36,833,588,718.88/206,539.14 - Step 6: Final answer
x = 178,337.09
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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.