Finding the Fourth Proportional to 126,906.40, 190,286.70 and 38,146.60
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Solution
The fourth proportional to 126,906.40, 190,286.70 and 38,146.60 is: 57,197.99
Step by Step Solution
- Step 1: Write the proportion equation
126,906.40 : 190,286.70 = 38,146.60 : x - Step 2: Convert to fraction form
126,906.40/190,286.70 = 38,146.60/x - Step 3: Cross multiply
126,906.40x = 190,286.70 × 38,146.60 - Step 4: Simplify right side
126,906.40x = 7,258,790,630.22 - Step 5: Solve for x
x = 7,258,790,630.22/126,906.40 - Step 6: Final answer
x = 57,197.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.