Finding the Fourth Proportional to 201,757.08, 278,421.48 and 120,142.20
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Solution
The fourth proportional to 201,757.08, 278,421.48 and 120,142.20 is: 165,794.28
Step by Step Solution
- Step 1: Write the proportion equation
201,757.08 : 278,421.48 = 120,142.20 : x - Step 2: Convert to fraction form
201,757.08/278,421.48 = 120,142.20/x - Step 3: Cross multiply
201,757.08x = 278,421.48 × 120,142.20 - Step 4: Simplify right side
201,757.08x = 33,450,169,134.46 - Step 5: Solve for x
x = 33,450,169,134.46/201,757.08 - Step 6: Final answer
x = 165,794.28
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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.