Finding the Fourth Proportional to 120,475.14, 166,256.68 and 66,761.05
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Solution
The fourth proportional to 120,475.14, 166,256.68 and 66,761.05 is: 92,130.80
Step by Step Solution
- Step 1: Write the proportion equation
120,475.14 : 166,256.68 = 66,761.05 : x - Step 2: Convert to fraction form
120,475.14/166,256.68 = 66,761.05/x - Step 3: Cross multiply
120,475.14x = 166,256.68 × 66,761.05 - Step 4: Simplify right side
120,475.14x = 11,099,470,192.91 - Step 5: Solve for x
x = 11,099,470,192.91/120,475.14 - Step 6: Final answer
x = 92,130.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.