Finding the Fourth Proportional to 100,212.96, 138,318.84 and 57,797.04
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Solution
The fourth proportional to 100,212.96, 138,318.84 and 57,797.04 is: 79,774.31
Step by Step Solution
- Step 1: Write the proportion equation
100,212.96 : 138,318.84 = 57,797.04 : x - Step 2: Convert to fraction form
100,212.96/138,318.84 = 57,797.04/x - Step 3: Cross multiply
100,212.96x = 138,318.84 × 57,797.04 - Step 4: Simplify right side
100,212.96x = 7,994,419,528.23 - Step 5: Solve for x
x = 7,994,419,528.23/100,212.96 - Step 6: Final answer
x = 79,774.31
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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.