Finding the Fourth Proportional to 120,191.30, 180,220.39 and 49,163.81
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Solution
The fourth proportional to 120,191.30, 180,220.39 and 49,163.81 is: 73,718.49
Step by Step Solution
- Step 1: Write the proportion equation
120,191.30 : 180,220.39 = 49,163.81 : x - Step 2: Convert to fraction form
120,191.30/180,220.39 = 49,163.81/x - Step 3: Cross multiply
120,191.30x = 180,220.39 × 49,163.81 - Step 4: Simplify right side
120,191.30x = 8,860,321,012.09 - Step 5: Solve for x
x = 8,860,321,012.09/120,191.30 - Step 6: Final answer
x = 73,718.49
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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.