Finding the Fourth Proportional to 161.64, 223.11 and 122.88
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Solution
The fourth proportional to 161.64, 223.11 and 122.88 is: 169.61
Step by Step Solution
- Step 1: Write the proportion equation
161.64 : 223.11 = 122.88 : x - Step 2: Convert to fraction form
161.64/223.11 = 122.88/x - Step 3: Cross multiply
161.64x = 223.11 × 122.88 - Step 4: Simplify right side
161.64x = 27,415.76 - Step 5: Solve for x
x = 27,415.76/161.64 - Step 6: Final answer
x = 169.61
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.