Finding the Fourth Proportional to 129,406.62, 194,107.98 and 40,665.44
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Solution
The fourth proportional to 129,406.62, 194,107.98 and 40,665.44 is: 60,997.55
Step by Step Solution
- Step 1: Write the proportion equation
129,406.62 : 194,107.98 = 40,665.44 : x - Step 2: Convert to fraction form
129,406.62/194,107.98 = 40,665.44/x - Step 3: Cross multiply
129,406.62x = 194,107.98 × 40,665.44 - Step 4: Simplify right side
129,406.62x = 7,893,486,414.21 - Step 5: Solve for x
x = 7,893,486,414.21/129,406.62 - Step 6: Final answer
x = 60,997.55
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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.