Finding the Fourth Proportional to 135.80, 187.36 and 113.68
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Solution
The fourth proportional to 135.80, 187.36 and 113.68 is: 156.84
Step by Step Solution
- Step 1: Write the proportion equation
135.80 : 187.36 = 113.68 : x - Step 2: Convert to fraction form
135.80/187.36 = 113.68/x - Step 3: Cross multiply
135.80x = 187.36 × 113.68 - Step 4: Simplify right side
135.80x = 21,299.08 - Step 5: Solve for x
x = 21,299.08/135.80 - Step 6: Final answer
x = 156.84
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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.