Finding the Fourth Proportional to 115,725.88, 173,575.74 and 78,524.92
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Solution
The fourth proportional to 115,725.88, 173,575.74 and 78,524.92 is: 117,778.50
Step by Step Solution
- Step 1: Write the proportion equation
115,725.88 : 173,575.74 = 78,524.92 : x - Step 2: Convert to fraction form
115,725.88/173,575.74 = 78,524.92/x - Step 3: Cross multiply
115,725.88x = 173,575.74 × 78,524.92 - Step 4: Simplify right side
115,725.88x = 13,630,021,097.44 - Step 5: Solve for x
x = 13,630,021,097.44/115,725.88 - Step 6: Final answer
x = 117,778.50
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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.