Finding the Fourth Proportional to 138.68, 191.26 and 110.84
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Solution
The fourth proportional to 138.68, 191.26 and 110.84 is: 152.86
Step by Step Solution
- Step 1: Write the proportion equation
138.68 : 191.26 = 110.84 : x - Step 2: Convert to fraction form
138.68/191.26 = 110.84/x - Step 3: Cross multiply
138.68x = 191.26 × 110.84 - Step 4: Simplify right side
138.68x = 21,199.26 - Step 5: Solve for x
x = 21,199.26/138.68 - Step 6: Final answer
x = 152.86
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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.