Finding the Fourth Proportional to 100,201.46, 138,302.97 and 57,785.54
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Solution
The fourth proportional to 100,201.46, 138,302.97 and 57,785.54 is: 79,758.44
Step by Step Solution
- Step 1: Write the proportion equation
100,201.46 : 138,302.97 = 57,785.54 : x - Step 2: Convert to fraction form
100,201.46/138,302.97 = 57,785.54/x - Step 3: Cross multiply
100,201.46x = 138,302.97 × 57,785.54 - Step 4: Simplify right side
100,201.46x = 7,991,911,805.05 - Step 5: Solve for x
x = 7,991,911,805.05/100,201.46 - Step 6: Final answer
x = 79,758.44
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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.