Finding the Fourth Proportional to 100,204.55, 138,284.36 and 54,884.43
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Solution
The fourth proportional to 100,204.55, 138,284.36 and 54,884.43 is: 75,741.65
Step by Step Solution
- Step 1: Write the proportion equation
100,204.55 : 138,284.36 = 54,884.43 : x - Step 2: Convert to fraction form
100,204.55/138,284.36 = 54,884.43/x - Step 3: Cross multiply
100,204.55x = 138,284.36 × 54,884.43 - Step 4: Simplify right side
100,204.55x = 7,589,658,002.09 - Step 5: Solve for x
x = 7,589,658,002.09/100,204.55 - Step 6: Final answer
x = 75,741.65
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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.