Finding the Fourth Proportional to 110,861.10, 166,291.65 and 75,431.70
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Solution
The fourth proportional to 110,861.10, 166,291.65 and 75,431.70 is: 113,147.55
Step by Step Solution
- Step 1: Write the proportion equation
110,861.10 : 166,291.65 = 75,431.70 : x - Step 2: Convert to fraction form
110,861.10/166,291.65 = 75,431.70/x - Step 3: Cross multiply
110,861.10x = 166,291.65 × 75,431.70 - Step 4: Simplify right side
110,861.10x = 12,543,661,855.31 - Step 5: Solve for x
x = 12,543,661,855.31/110,861.10 - Step 6: Final answer
x = 113,147.55
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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.