Finding the Fourth Proportional to 129,874.20, 194,811.30 and 100,349.70
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Solution
The fourth proportional to 129,874.20, 194,811.30 and 100,349.70 is: 150,524.55
Step by Step Solution
- Step 1: Write the proportion equation
129,874.20 : 194,811.30 = 100,349.70 : x - Step 2: Convert to fraction form
129,874.20/194,811.30 = 100,349.70/x - Step 3: Cross multiply
129,874.20x = 194,811.30 × 100,349.70 - Step 4: Simplify right side
129,874.20x = 19,549,255,511.61 - Step 5: Solve for x
x = 19,549,255,511.61/129,874.20 - Step 6: Final answer
x = 150,524.55
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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.