Finding the Fourth Proportional to 100,175.73, 138,245.80 and 54,855.62
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Solution
The fourth proportional to 100,175.73, 138,245.80 and 54,855.62 is: 75,702.56
Step by Step Solution
- Step 1: Write the proportion equation
100,175.73 : 138,245.80 = 54,855.62 : x - Step 2: Convert to fraction form
100,175.73/138,245.80 = 54,855.62/x - Step 3: Cross multiply
100,175.73x = 138,245.80 × 54,855.62 - Step 4: Simplify right side
100,175.73x = 7,583,559,071.40 - Step 5: Solve for x
x = 7,583,559,071.40/100,175.73 - Step 6: Final answer
x = 75,702.56
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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.