Finding the Fourth Proportional to 128,993.28, 193,512.60 and 58,879.68
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Solution
The fourth proportional to 128,993.28, 193,512.60 and 58,879.68 is: 88,329.87
Step by Step Solution
- Step 1: Write the proportion equation
128,993.28 : 193,512.60 = 58,879.68 : x - Step 2: Convert to fraction form
128,993.28/193,512.60 = 58,879.68/x - Step 3: Cross multiply
128,993.28x = 193,512.60 × 58,879.68 - Step 4: Simplify right side
128,993.28x = 11,393,959,963.97 - Step 5: Solve for x
x = 11,393,959,963.97/128,993.28 - Step 6: Final answer
x = 88,329.87
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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.