Finding the Fourth Proportional to 82,135.08, 122,608.47 and 72,170.58
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Solution
The fourth proportional to 82,135.08, 122,608.47 and 72,170.58 is: 107,733.80
Step by Step Solution
- Step 1: Write the proportion equation
82,135.08 : 122,608.47 = 72,170.58 : x - Step 2: Convert to fraction form
82,135.08/122,608.47 = 72,170.58/x - Step 3: Cross multiply
82,135.08x = 122,608.47 × 72,170.58 - Step 4: Simplify right side
82,135.08x = 8,848,724,392.81 - Step 5: Solve for x
x = 8,848,724,392.81/82,135.08 - Step 6: Final answer
x = 107,733.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.