Finding the Fourth Proportional to 142,169.40, 213,122.26 and 53,481.68
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Solution
The fourth proportional to 142,169.40, 213,122.26 and 53,481.68 is: 80,172.92
Step by Step Solution
- Step 1: Write the proportion equation
142,169.40 : 213,122.26 = 53,481.68 : x - Step 2: Convert to fraction form
142,169.40/213,122.26 = 53,481.68/x - Step 3: Cross multiply
142,169.40x = 213,122.26 × 53,481.68 - Step 4: Simplify right side
142,169.40x = 11,398,136,510.20 - Step 5: Solve for x
x = 11,398,136,510.20/142,169.40 - Step 6: Final answer
x = 80,172.92
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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.