Finding the Fourth Proportional to 120,107.21, 165,756.58 and 66,391.11
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Solution
The fourth proportional to 120,107.21, 165,756.58 and 66,391.11 is: 91,624.50
Step by Step Solution
- Step 1: Write the proportion equation
120,107.21 : 165,756.58 = 66,391.11 : x - Step 2: Convert to fraction form
120,107.21/165,756.58 = 66,391.11/x - Step 3: Cross multiply
120,107.21x = 165,756.58 × 66,391.11 - Step 4: Simplify right side
120,107.21x = 11,004,763,170.03 - Step 5: Solve for x
x = 11,004,763,170.03/120,107.21 - Step 6: Final answer
x = 91,624.50
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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.