Finding the Fourth Proportional to 281,136.62, 421,704.94 and 81,457.13
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Solution
The fourth proportional to 281,136.62, 421,704.94 and 81,457.13 is: 122,185.70
Step by Step Solution
- Step 1: Write the proportion equation
281,136.62 : 421,704.94 = 81,457.13 : x - Step 2: Convert to fraction form
281,136.62/421,704.94 = 81,457.13/x - Step 3: Cross multiply
281,136.62x = 421,704.94 × 81,457.13 - Step 4: Simplify right side
281,136.62x = 34,350,873,711.94 - Step 5: Solve for x
x = 34,350,873,711.94/281,136.62 - Step 6: Final answer
x = 122,185.70
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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.