Finding the Fourth Proportional to 128,793.94, 177,823.62 and 80,469.44
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Solution
The fourth proportional to 128,793.94, 177,823.62 and 80,469.44 is: 111,102.80
Step by Step Solution
- Step 1: Write the proportion equation
128,793.94 : 177,823.62 = 80,469.44 : x - Step 2: Convert to fraction form
128,793.94/177,823.62 = 80,469.44/x - Step 3: Cross multiply
128,793.94x = 177,823.62 × 80,469.44 - Step 4: Simplify right side
128,793.94x = 14,309,367,120.17 - Step 5: Solve for x
x = 14,309,367,120.17/128,793.94 - Step 6: Final answer
x = 111,102.80
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.