Finding the Fourth Proportional to 173,990.79, 261,012.11 and 80,505.99
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Solution
The fourth proportional to 173,990.79, 261,012.11 and 80,505.99 is: 120,770.98
Step by Step Solution
- Step 1: Write the proportion equation
173,990.79 : 261,012.11 = 80,505.99 : x - Step 2: Convert to fraction form
173,990.79/261,012.11 = 80,505.99/x - Step 3: Cross multiply
173,990.79x = 261,012.11 × 80,505.99 - Step 4: Simplify right side
173,990.79x = 21,013,037,915.01 - Step 5: Solve for x
x = 21,013,037,915.01/173,990.79 - Step 6: Final answer
x = 120,770.98
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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.