Finding the Fourth Proportional to 125,112.94, 187,198.56 and 87,745.95
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Solution
The fourth proportional to 125,112.94, 187,198.56 and 87,745.95 is: 131,288.70
Step by Step Solution
- Step 1: Write the proportion equation
125,112.94 : 187,198.56 = 87,745.95 : x - Step 2: Convert to fraction form
125,112.94/187,198.56 = 87,745.95/x - Step 3: Cross multiply
125,112.94x = 187,198.56 × 87,745.95 - Step 4: Simplify right side
125,112.94x = 16,425,915,485.83 - Step 5: Solve for x
x = 16,425,915,485.83/125,112.94 - Step 6: Final answer
x = 131,288.70
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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.