Finding the Fourth Proportional to 118,207.20, 177,310.80 and 48,136.80
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Solution
The fourth proportional to 118,207.20, 177,310.80 and 48,136.80 is: 72,205.20
Step by Step Solution
- Step 1: Write the proportion equation
118,207.20 : 177,310.80 = 48,136.80 : x - Step 2: Convert to fraction form
118,207.20/177,310.80 = 48,136.80/x - Step 3: Cross multiply
118,207.20x = 177,310.80 × 48,136.80 - Step 4: Simplify right side
118,207.20x = 8,535,174,517.44 - Step 5: Solve for x
x = 8,535,174,517.44/118,207.20 - Step 6: Final answer
x = 72,205.20
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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.