Finding the Fourth Proportional to 107,930.80, 161,896.20 and 84,311.20
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Solution
The fourth proportional to 107,930.80, 161,896.20 and 84,311.20 is: 126,466.80
Step by Step Solution
- Step 1: Write the proportion equation
107,930.80 : 161,896.20 = 84,311.20 : x - Step 2: Convert to fraction form
107,930.80/161,896.20 = 84,311.20/x - Step 3: Cross multiply
107,930.80x = 161,896.20 × 84,311.20 - Step 4: Simplify right side
107,930.80x = 13,649,662,897.44 - Step 5: Solve for x
x = 13,649,662,897.44/107,930.80 - Step 6: Final answer
x = 126,466.80
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1.5x scale
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.