Finding the Fourth Proportional to 129,745.40, 194,618.10 and 107,583.80
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Solution
The fourth proportional to 129,745.40, 194,618.10 and 107,583.80 is: 161,375.70
Step by Step Solution
- Step 1: Write the proportion equation
129,745.40 : 194,618.10 = 107,583.80 : x - Step 2: Convert to fraction form
129,745.40/194,618.10 = 107,583.80/x - Step 3: Cross multiply
129,745.40x = 194,618.10 × 107,583.80 - Step 4: Simplify right side
129,745.40x = 20,937,754,746.78 - Step 5: Solve for x
x = 20,937,754,746.78/129,745.40 - Step 6: Final answer
x = 161,375.70
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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.