Finding the Fourth Proportional to 121,587.26, 167,808.04 and 87,708.02
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Solution
The fourth proportional to 121,587.26, 167,808.04 and 87,708.02 is: 121,049.78
Step by Step Solution
- Step 1: Write the proportion equation
121,587.26 : 167,808.04 = 87,708.02 : x - Step 2: Convert to fraction form
121,587.26/167,808.04 = 87,708.02/x - Step 3: Cross multiply
121,587.26x = 167,808.04 × 87,708.02 - Step 4: Simplify right side
121,587.26x = 14,718,110,928.48 - Step 5: Solve for x
x = 14,718,110,928.48/121,587.26 - Step 6: Final answer
x = 121,049.78
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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.