Finding the Fourth Proportional to 163,229.15, 225,278.21 and 91,613.09
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Solution
The fourth proportional to 163,229.15, 225,278.21 and 91,613.09 is: 126,438.41
Step by Step Solution
- Step 1: Write the proportion equation
163,229.15 : 225,278.21 = 91,613.09 : x - Step 2: Convert to fraction form
163,229.15/225,278.21 = 91,613.09/x - Step 3: Cross multiply
163,229.15x = 225,278.21 × 91,613.09 - Step 4: Simplify right side
163,229.15x = 20,638,433,720.00 - Step 5: Solve for x
x = 20,638,433,720.00/163,229.15 - Step 6: Final answer
x = 126,438.41
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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.