Finding the Fourth Proportional to 206,915.19, 285,533.77 and 120,882.15
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Solution
The fourth proportional to 206,915.19, 285,533.77 and 120,882.15 is: 166,811.99
Step by Step Solution
- Step 1: Write the proportion equation
206,915.19 : 285,533.77 = 120,882.15 : x - Step 2: Convert to fraction form
206,915.19/285,533.77 = 120,882.15/x - Step 3: Cross multiply
206,915.19x = 285,533.77 × 120,882.15 - Step 4: Simplify right side
206,915.19x = 34,515,935,410.79 - Step 5: Solve for x
x = 34,515,935,410.79/206,915.19 - Step 6: Final answer
x = 166,811.99
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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.