Finding the Fourth Proportional to 120,982.08, 166,915.36 and 73,217.28
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Solution
The fourth proportional to 120,982.08, 166,915.36 and 73,217.28 is: 101,015.69
Step by Step Solution
- Step 1: Write the proportion equation
120,982.08 : 166,915.36 = 73,217.28 : x - Step 2: Convert to fraction form
120,982.08/166,915.36 = 73,217.28/x - Step 3: Cross multiply
120,982.08x = 166,915.36 × 73,217.28 - Step 4: Simplify right side
120,982.08x = 12,221,088,649.42 - Step 5: Solve for x
x = 12,221,088,649.42/120,982.08 - Step 6: Final answer
x = 101,015.69
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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.