Finding the Fourth Proportional to 125.79, 174.08 and 122.75
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Solution
The fourth proportional to 125.79, 174.08 and 122.75 is: 169.88
Step by Step Solution
- Step 1: Write the proportion equation
125.79 : 174.08 = 122.75 : x - Step 2: Convert to fraction form
125.79/174.08 = 122.75/x - Step 3: Cross multiply
125.79x = 174.08 × 122.75 - Step 4: Simplify right side
125.79x = 21,369.06 - Step 5: Solve for x
x = 21,369.06/125.79 - Step 6: Final answer
x = 169.88
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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.