Finding the Fourth Proportional to 129,093.20, 193,380.60 and 87,102.80
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Solution
The fourth proportional to 129,093.20, 193,380.60 and 87,102.80 is: 130,479.31
Step by Step Solution
- Step 1: Write the proportion equation
129,093.20 : 193,380.60 = 87,102.80 : x - Step 2: Convert to fraction form
129,093.20/193,380.60 = 87,102.80/x - Step 3: Cross multiply
129,093.20x = 193,380.60 × 87,102.80 - Step 4: Simplify right side
129,093.20x = 16,843,991,725.68 - Step 5: Solve for x
x = 16,843,991,725.68/129,093.20 - Step 6: Final answer
x = 130,479.31
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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.