Finding the Fourth Proportional to 128,797.75, 177,680.41 and 91,092.79
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Solution
The fourth proportional to 128,797.75, 177,680.41 and 91,092.79 is: 125,665.27
Step by Step Solution
- Step 1: Write the proportion equation
128,797.75 : 177,680.41 = 91,092.79 : x - Step 2: Convert to fraction form
128,797.75/177,680.41 = 91,092.79/x - Step 3: Cross multiply
128,797.75x = 177,680.41 × 91,092.79 - Step 4: Simplify right side
128,797.75x = 16,185,404,275.24 - Step 5: Solve for x
x = 16,185,404,275.24/128,797.75 - Step 6: Final answer
x = 125,665.27
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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.