Finding the Fourth Proportional to 203,939.55, 281,431.53 and 113,295.75
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Solution
The fourth proportional to 203,939.55, 281,431.53 and 113,295.75 is: 156,345.33
Step by Step Solution
- Step 1: Write the proportion equation
203,939.55 : 281,431.53 = 113,295.75 : x - Step 2: Convert to fraction form
203,939.55/281,431.53 = 113,295.75/x - Step 3: Cross multiply
203,939.55x = 281,431.53 × 113,295.75 - Step 4: Simplify right side
203,939.55x = 31,884,996,265.00 - Step 5: Solve for x
x = 31,884,996,265.00/203,939.55 - Step 6: Final answer
x = 156,345.33
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1.5x scale
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.