Finding the Fourth Proportional to 163.12, 225.14 and 93.21
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Solution
The fourth proportional to 163.12, 225.14 and 93.21 is: 128.66
Step by Step Solution
- Step 1: Write the proportion equation
163.12 : 225.14 = 93.21 : x - Step 2: Convert to fraction form
163.12/225.14 = 93.21/x - Step 3: Cross multiply
163.12x = 225.14 × 93.21 - Step 4: Simplify right side
163.12x = 20,986.13 - Step 5: Solve for x
x = 20,986.13/163.12 - Step 6: Final answer
x = 128.66
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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.