Finding the Fourth Proportional to 100,297.62, 138,410.19 and 54,977.49
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Solution
The fourth proportional to 100,297.62, 138,410.19 and 54,977.49 is: 75,868.65
Step by Step Solution
- Step 1: Write the proportion equation
100,297.62 : 138,410.19 = 54,977.49 : x - Step 2: Convert to fraction form
100,297.62/138,410.19 = 54,977.49/x - Step 3: Cross multiply
100,297.62x = 138,410.19 × 54,977.49 - Step 4: Simplify right side
100,297.62x = 7,609,444,836.62 - Step 5: Solve for x
x = 7,609,444,836.62/100,297.62 - Step 6: Final answer
x = 75,868.65
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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.