Finding the Fourth Proportional to 125,438.82, 173,049.12 and 74,453.70
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Solution
The fourth proportional to 125,438.82, 173,049.12 and 74,453.70 is: 102,712.60
Step by Step Solution
- Step 1: Write the proportion equation
125,438.82 : 173,049.12 = 74,453.70 : x - Step 2: Convert to fraction form
125,438.82/173,049.12 = 74,453.70/x - Step 3: Cross multiply
125,438.82x = 173,049.12 × 74,453.70 - Step 4: Simplify right side
125,438.82x = 12,884,147,265.74 - Step 5: Solve for x
x = 12,884,147,265.74/125,438.82 - Step 6: Final answer
x = 102,712.60
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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.