Finding the Fourth Proportional to 100,531.96, 138,657.23 and 68,291.44
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Solution
The fourth proportional to 100,531.96, 138,657.23 and 68,291.44 is: 94,189.96
Step by Step Solution
- Step 1: Write the proportion equation
100,531.96 : 138,657.23 = 68,291.44 : x - Step 2: Convert to fraction form
100,531.96/138,657.23 = 68,291.44/x - Step 3: Cross multiply
100,531.96x = 138,657.23 × 68,291.44 - Step 4: Simplify right side
100,531.96x = 9,469,100,868.37 - Step 5: Solve for x
x = 9,469,100,868.37/100,531.96 - Step 6: Final answer
x = 94,189.96
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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.