Finding the Fourth Proportional to 124.36, 171.36 and 122.68
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Solution
The fourth proportional to 124.36, 171.36 and 122.68 is: 169.05
Step by Step Solution
- Step 1: Write the proportion equation
124.36 : 171.36 = 122.68 : x - Step 2: Convert to fraction form
124.36/171.36 = 122.68/x - Step 3: Cross multiply
124.36x = 171.36 × 122.68 - Step 4: Simplify right side
124.36x = 21,022.44 - Step 5: Solve for x
x = 21,022.44/124.36 - Step 6: Final answer
x = 169.05
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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.