Finding the Fourth Proportional to 135.09, 186.44 and 76.08
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Solution
The fourth proportional to 135.09, 186.44 and 76.08 is: 105.00
Step by Step Solution
- Step 1: Write the proportion equation
135.09 : 186.44 = 76.08 : x - Step 2: Convert to fraction form
135.09/186.44 = 76.08/x - Step 3: Cross multiply
135.09x = 186.44 × 76.08 - Step 4: Simplify right side
135.09x = 14,184.36 - Step 5: Solve for x
x = 14,184.36/135.09 - Step 6: Final answer
x = 105.00
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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.