Finding the Fourth Proportional to 128,260.26, 176,884.56 and 80,518.05
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Solution
The fourth proportional to 128,260.26, 176,884.56 and 80,518.05 is: 111,042.97
Step by Step Solution
- Step 1: Write the proportion equation
128,260.26 : 176,884.56 = 80,518.05 : x - Step 2: Convert to fraction form
128,260.26/176,884.56 = 80,518.05/x - Step 3: Cross multiply
128,260.26x = 176,884.56 × 80,518.05 - Step 4: Simplify right side
128,260.26x = 14,242,399,846.31 - Step 5: Solve for x
x = 14,242,399,846.31/128,260.26 - Step 6: Final answer
x = 111,042.97
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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.