Finding the Fourth Proportional to 134.87, 186.08 and 76.68
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Solution
The fourth proportional to 134.87, 186.08 and 76.68 is: 105.80
Step by Step Solution
- Step 1: Write the proportion equation
134.87 : 186.08 = 76.68 : x - Step 2: Convert to fraction form
134.87/186.08 = 76.68/x - Step 3: Cross multiply
134.87x = 186.08 × 76.68 - Step 4: Simplify right side
134.87x = 14,268.23 - Step 5: Solve for x
x = 14,268.23/134.87 - Step 6: Final answer
x = 105.80
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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.