Finding the Fourth Proportional to 129,445.20, 194,195.52 and 73,311.84
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Solution
The fourth proportional to 129,445.20, 194,195.52 and 73,311.84 is: 109,983.46
Step by Step Solution
- Step 1: Write the proportion equation
129,445.20 : 194,195.52 = 73,311.84 : x - Step 2: Convert to fraction form
129,445.20/194,195.52 = 73,311.84/x - Step 3: Cross multiply
129,445.20x = 194,195.52 × 73,311.84 - Step 4: Simplify right side
129,445.20x = 14,236,830,890.96 - Step 5: Solve for x
x = 14,236,830,890.96/129,445.20 - Step 6: Final answer
x = 109,983.46
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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.