Finding the Fourth Proportional to 128,464.88, 192,649.40 and 44,201.44
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Solution
The fourth proportional to 128,464.88, 192,649.40 and 44,201.44 is: 66,285.67
Step by Step Solution
- Step 1: Write the proportion equation
128,464.88 : 192,649.40 = 44,201.44 : x - Step 2: Convert to fraction form
128,464.88/192,649.40 = 44,201.44/x - Step 3: Cross multiply
128,464.88x = 192,649.40 × 44,201.44 - Step 4: Simplify right side
128,464.88x = 8,515,380,895.14 - Step 5: Solve for x
x = 8,515,380,895.14/128,464.88 - Step 6: Final answer
x = 66,285.67
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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.