Finding the Fourth Proportional to 159,882.42, 220,644.88 and 91,921.44
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Solution
The fourth proportional to 159,882.42, 220,644.88 and 91,921.44 is: 126,855.69
Step by Step Solution
- Step 1: Write the proportion equation
159,882.42 : 220,644.88 = 91,921.44 : x - Step 2: Convert to fraction form
159,882.42/220,644.88 = 91,921.44/x - Step 3: Cross multiply
159,882.42x = 220,644.88 × 91,921.44 - Step 4: Simplify right side
159,882.42x = 20,281,995,098.23 - Step 5: Solve for x
x = 20,281,995,098.23/159,882.42 - Step 6: Final answer
x = 126,855.69
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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.