Finding the Fourth Proportional to 129,662.70, 194,234.85 and 74,193.90
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Solution
The fourth proportional to 129,662.70, 194,234.85 and 74,193.90 is: 111,142.53
Step by Step Solution
- Step 1: Write the proportion equation
129,662.70 : 194,234.85 = 74,193.90 : x - Step 2: Convert to fraction form
129,662.70/194,234.85 = 74,193.90/x - Step 3: Cross multiply
129,662.70x = 194,234.85 × 74,193.90 - Step 4: Simplify right side
129,662.70x = 14,411,041,037.42 - Step 5: Solve for x
x = 14,411,041,037.42/129,662.70 - Step 6: Final answer
x = 111,142.53
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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.