Finding the Fourth Proportional to 178.64, 267.93 and 81.08
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Solution
The fourth proportional to 178.64, 267.93 and 81.08 is: 121.60
Step by Step Solution
- Step 1: Write the proportion equation
178.64 : 267.93 = 81.08 : x - Step 2: Convert to fraction form
178.64/267.93 = 81.08/x - Step 3: Cross multiply
178.64x = 267.93 × 81.08 - Step 4: Simplify right side
178.64x = 21,722.42 - Step 5: Solve for x
x = 21,722.42/178.64 - Step 6: Final answer
x = 121.60
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.