Finding the Fourth Proportional to 115,474.80, 173,212.20 and 91,855.20
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Solution
The fourth proportional to 115,474.80, 173,212.20 and 91,855.20 is: 137,782.80
Step by Step Solution
- Step 1: Write the proportion equation
115,474.80 : 173,212.20 = 91,855.20 : x - Step 2: Convert to fraction form
115,474.80/173,212.20 = 91,855.20/x - Step 3: Cross multiply
115,474.80x = 173,212.20 × 91,855.20 - Step 4: Simplify right side
115,474.80x = 15,910,441,273.44 - Step 5: Solve for x
x = 15,910,441,273.44/115,474.80 - Step 6: Final answer
x = 137,782.80
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1.5x scale
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.