Finding the Fourth Proportional to 135.10, 186.44 and 76.88
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Solution
The fourth proportional to 135.10, 186.44 and 76.88 is: 106.09
Step by Step Solution
- Step 1: Write the proportion equation
135.10 : 186.44 = 76.88 : x - Step 2: Convert to fraction form
135.10/186.44 = 76.88/x - Step 3: Cross multiply
135.10x = 186.44 × 76.88 - Step 4: Simplify right side
135.10x = 14,332.19 - Step 5: Solve for x
x = 14,332.19/135.10 - Step 6: Final answer
x = 106.09
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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.