Finding the Fourth Proportional to 120,101.70, 180,149.67 and 39,048.62
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Solution
The fourth proportional to 120,101.70, 180,149.67 and 39,048.62 is: 58,571.98
Step by Step Solution
- Step 1: Write the proportion equation
120,101.70 : 180,149.67 = 39,048.62 : x - Step 2: Convert to fraction form
120,101.70/180,149.67 = 39,048.62/x - Step 3: Cross multiply
120,101.70x = 180,149.67 × 39,048.62 - Step 4: Simplify right side
120,101.70x = 7,034,595,106.21 - Step 5: Solve for x
x = 7,034,595,106.21/120,101.70 - Step 6: Final answer
x = 58,571.98
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.