Finding the Fourth Proportional to 206,549.49, 309,611.09 and 86,676.07
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Solution
The fourth proportional to 206,549.49, 309,611.09 and 86,676.07 is: 129,924.66
Step by Step Solution
- Step 1: Write the proportion equation
206,549.49 : 309,611.09 = 86,676.07 : x - Step 2: Convert to fraction form
206,549.49/309,611.09 = 86,676.07/x - Step 3: Cross multiply
206,549.49x = 309,611.09 × 86,676.07 - Step 4: Simplify right side
206,549.49x = 26,835,871,952.28 - Step 5: Solve for x
x = 26,835,871,952.28/206,549.49 - Step 6: Final answer
x = 129,924.66
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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.