Finding the Fourth Proportional to 121,391.53, 167,508.21 and 73,642.03
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Solution
The fourth proportional to 121,391.53, 167,508.21 and 73,642.03 is: 101,618.66
Step by Step Solution
- Step 1: Write the proportion equation
121,391.53 : 167,508.21 = 73,642.03 : x - Step 2: Convert to fraction form
121,391.53/167,508.21 = 73,642.03/x - Step 3: Cross multiply
121,391.53x = 167,508.21 × 73,642.03 - Step 4: Simplify right side
121,391.53x = 12,335,644,626.07 - Step 5: Solve for x
x = 12,335,644,626.07/121,391.53 - Step 6: Final answer
x = 101,618.66
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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.