Finding the Fourth Proportional to 169,163.60, 253,745.40 and 84,891.20
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Solution
The fourth proportional to 169,163.60, 253,745.40 and 84,891.20 is: 127,336.80
Step by Step Solution
- Step 1: Write the proportion equation
169,163.60 : 253,745.40 = 84,891.20 : x - Step 2: Convert to fraction form
169,163.60/253,745.40 = 84,891.20/x - Step 3: Cross multiply
169,163.60x = 253,745.40 × 84,891.20 - Step 4: Simplify right side
169,163.60x = 21,540,751,500.48 - Step 5: Solve for x
x = 21,540,751,500.48/169,163.60 - Step 6: Final answer
x = 127,336.80
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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.