Finding the Fourth Proportional to 128,912.76, 177,932.28 and 88,093.44
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Solution
The fourth proportional to 128,912.76, 177,932.28 and 88,093.44 is: 121,591.27
Step by Step Solution
- Step 1: Write the proportion equation
128,912.76 : 177,932.28 = 88,093.44 : x - Step 2: Convert to fraction form
128,912.76/177,932.28 = 88,093.44/x - Step 3: Cross multiply
128,912.76x = 177,932.28 × 88,093.44 - Step 4: Simplify right side
128,912.76x = 15,674,666,632.24 - Step 5: Solve for x
x = 15,674,666,632.24/128,912.76 - Step 6: Final answer
x = 121,591.27
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1.5x scale
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.