Finding the Fourth Proportional to 128,085.44, 192,029.40 and 48,121.70
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Solution
The fourth proportional to 128,085.44, 192,029.40 and 48,121.70 is: 72,145.44
Step by Step Solution
- Step 1: Write the proportion equation
128,085.44 : 192,029.40 = 48,121.70 : x - Step 2: Convert to fraction form
128,085.44/192,029.40 = 48,121.70/x - Step 3: Cross multiply
128,085.44x = 192,029.40 × 48,121.70 - Step 4: Simplify right side
128,085.44x = 9,240,780,217.83 - Step 5: Solve for x
x = 9,240,780,217.83/128,085.44 - Step 6: Final answer
x = 72,145.44
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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.