Finding the Fourth Proportional to 125.93, 188.71 and 71.75
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Solution
The fourth proportional to 125.93, 188.71 and 71.75 is: 107.52
Step by Step Solution
- Step 1: Write the proportion equation
125.93 : 188.71 = 71.75 : x - Step 2: Convert to fraction form
125.93/188.71 = 71.75/x - Step 3: Cross multiply
125.93x = 188.71 × 71.75 - Step 4: Simplify right side
125.93x = 13,540.23 - Step 5: Solve for x
x = 13,540.23/125.93 - Step 6: Final answer
x = 107.52
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.