Finding the Fourth Proportional to 206,548.74, 309,609.97 and 86,675.32
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Solution
The fourth proportional to 206,548.74, 309,609.97 and 86,675.32 is: 129,923.54
Step by Step Solution
- Step 1: Write the proportion equation
206,548.74 : 309,609.97 = 86,675.32 : x - Step 2: Convert to fraction form
206,548.74/309,609.97 = 86,675.32/x - Step 3: Cross multiply
206,548.74x = 309,609.97 × 86,675.32 - Step 4: Simplify right side
206,548.74x = 26,835,543,203.65 - Step 5: Solve for x
x = 26,835,543,203.65/206,548.74 - Step 6: Final answer
x = 129,923.54
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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.