Finding the Fourth Proportional to 126,115.21, 173,979.60 and 75,098.88
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Solution
The fourth proportional to 126,115.21, 173,979.60 and 75,098.88 is: 103,601.09
Step by Step Solution
- Step 1: Write the proportion equation
126,115.21 : 173,979.60 = 75,098.88 : x - Step 2: Convert to fraction form
126,115.21/173,979.60 = 75,098.88/x - Step 3: Cross multiply
126,115.21x = 173,979.60 × 75,098.88 - Step 4: Simplify right side
126,115.21x = 13,065,672,821.23 - Step 5: Solve for x
x = 13,065,672,821.23/126,115.21 - Step 6: Final answer
x = 103,601.09
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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.