Finding the Fourth Proportional to 115,532.64, 173,286.99 and 78,331.68
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Solution
The fourth proportional to 115,532.64, 173,286.99 and 78,331.68 is: 117,489.40
Step by Step Solution
- Step 1: Write the proportion equation
115,532.64 : 173,286.99 = 78,331.68 : x - Step 2: Convert to fraction form
115,532.64/173,286.99 = 78,331.68/x - Step 3: Cross multiply
115,532.64x = 173,286.99 × 78,331.68 - Step 4: Simplify right side
115,532.64x = 13,573,861,048.84 - Step 5: Solve for x
x = 13,573,861,048.84/115,532.64 - Step 6: Final answer
x = 117,489.40
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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.