Finding the Fourth Proportional to 201,691.40, 302,537.10 and 68,721.80
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Solution
The fourth proportional to 201,691.40, 302,537.10 and 68,721.80 is: 103,082.70
Step by Step Solution
- Step 1: Write the proportion equation
201,691.40 : 302,537.10 = 68,721.80 : x - Step 2: Convert to fraction form
201,691.40/302,537.10 = 68,721.80/x - Step 3: Cross multiply
201,691.40x = 302,537.10 × 68,721.80 - Step 4: Simplify right side
201,691.40x = 20,790,894,078.78 - Step 5: Solve for x
x = 20,790,894,078.78/201,691.40 - Step 6: Final answer
x = 103,082.70
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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.