Finding the Fourth Proportional to 121,163.28, 167,270.92 and 84,975.84
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Solution
The fourth proportional to 121,163.28, 167,270.92 and 84,975.84 is: 117,312.66
Step by Step Solution
- Step 1: Write the proportion equation
121,163.28 : 167,270.92 = 84,975.84 : x - Step 2: Convert to fraction form
121,163.28/167,270.92 = 84,975.84/x - Step 3: Cross multiply
121,163.28x = 167,270.92 × 84,975.84 - Step 4: Simplify right side
121,163.28x = 14,213,986,934.57 - Step 5: Solve for x
x = 14,213,986,934.57/121,163.28 - Step 6: Final answer
x = 117,312.66
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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.