Finding the Fourth Proportional to 100,093.18, 138,122.62 and 54,762.13
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Solution
The fourth proportional to 100,093.18, 138,122.62 and 54,762.13 is: 75,568.47
Step by Step Solution
- Step 1: Write the proportion equation
100,093.18 : 138,122.62 = 54,762.13 : x - Step 2: Convert to fraction form
100,093.18/138,122.62 = 54,762.13/x - Step 3: Cross multiply
100,093.18x = 138,122.62 × 54,762.13 - Step 4: Simplify right side
100,093.18x = 7,563,888,872.38 - Step 5: Solve for x
x = 7,563,888,872.38/100,093.18 - Step 6: Final answer
x = 75,568.47
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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.