Finding the Fourth Proportional to 128,107.44, 192,170.34 and 36,919.13
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Solution
The fourth proportional to 128,107.44, 192,170.34 and 36,919.13 is: 55,381.33
Step by Step Solution
- Step 1: Write the proportion equation
128,107.44 : 192,170.34 = 36,919.13 : x - Step 2: Convert to fraction form
128,107.44/192,170.34 = 36,919.13/x - Step 3: Cross multiply
128,107.44x = 192,170.34 × 36,919.13 - Step 4: Simplify right side
128,107.44x = 7,094,760,803.75 - Step 5: Solve for x
x = 7,094,760,803.75/128,107.44 - Step 6: Final answer
x = 55,381.33
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1.5x scale
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.