Finding the Fourth Proportional to 121,620.13, 167,834.19 and 67,906.06
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Solution
The fourth proportional to 121,620.13, 167,834.19 and 67,906.06 is: 93,709.48
Step by Step Solution
- Step 1: Write the proportion equation
121,620.13 : 167,834.19 = 67,906.06 : x - Step 2: Convert to fraction form
121,620.13/167,834.19 = 67,906.06/x - Step 3: Cross multiply
121,620.13x = 167,834.19 × 67,906.06 - Step 4: Simplify right side
121,620.13x = 11,396,958,576.19 - Step 5: Solve for x
x = 11,396,958,576.19/121,620.13 - Step 6: Final answer
x = 93,709.48
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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.