Finding the Fourth Proportional to 156,052.81, 215,351.34 and 84,431.26
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Solution
The fourth proportional to 156,052.81, 215,351.34 and 84,431.26 is: 116,514.30
Step by Step Solution
- Step 1: Write the proportion equation
156,052.81 : 215,351.34 = 84,431.26 : x - Step 2: Convert to fraction form
156,052.81/215,351.34 = 84,431.26/x - Step 3: Cross multiply
156,052.81x = 215,351.34 × 84,431.26 - Step 4: Simplify right side
156,052.81x = 18,182,383,902.13 - Step 5: Solve for x
x = 18,182,383,902.13/156,052.81 - Step 6: Final answer
x = 116,514.30
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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.