Finding the Fourth Proportional to 125.99, 173.88 and 76.87
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Solution
The fourth proportional to 125.99, 173.88 and 76.87 is: 106.09
Step by Step Solution
- Step 1: Write the proportion equation
125.99 : 173.88 = 76.87 : x - Step 2: Convert to fraction form
125.99/173.88 = 76.87/x - Step 3: Cross multiply
125.99x = 173.88 × 76.87 - Step 4: Simplify right side
125.99x = 13,365.77 - Step 5: Solve for x
x = 13,365.77/125.99 - 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.