Finding the Fourth Proportional to 100,107.18, 138,146.64 and 54,784.62
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Solution
The fourth proportional to 100,107.18, 138,146.64 and 54,784.62 is: 75,602.08
Step by Step Solution
- Step 1: Write the proportion equation
100,107.18 : 138,146.64 = 54,784.62 : x - Step 2: Convert to fraction form
100,107.18/138,146.64 = 54,784.62/x - Step 3: Cross multiply
100,107.18x = 138,146.64 × 54,784.62 - Step 4: Simplify right side
100,107.18x = 7,568,311,176.68 - Step 5: Solve for x
x = 7,568,311,176.68/100,107.18 - Step 6: Final answer
x = 75,602.08
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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.