Finding the Fourth Proportional to 203,982.13, 306,005.97 and 85,687.30
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Solution
The fourth proportional to 203,982.13, 306,005.97 and 85,687.30 is: 128,544.71
Step by Step Solution
- Step 1: Write the proportion equation
203,982.13 : 306,005.97 = 85,687.30 : x - Step 2: Convert to fraction form
203,982.13/306,005.97 = 85,687.30/x - Step 3: Cross multiply
203,982.13x = 306,005.97 × 85,687.30 - Step 4: Simplify right side
203,982.13x = 26,220,823,823.15 - Step 5: Solve for x
x = 26,220,823,823.15/203,982.13 - Step 6: Final answer
x = 128,544.71
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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.