Finding the Fourth Proportional to 76,163.60, 113,921.40 and 68,322.80
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Solution
The fourth proportional to 76,163.60, 113,921.40 and 68,322.80 is: 102,193.55
Step by Step Solution
- Step 1: Write the proportion equation
76,163.60 : 113,921.40 = 68,322.80 : x - Step 2: Convert to fraction form
76,163.60/113,921.40 = 68,322.80/x - Step 3: Cross multiply
76,163.60x = 113,921.40 × 68,322.80 - Step 4: Simplify right side
76,163.60x = 7,783,429,027.92 - Step 5: Solve for x
x = 7,783,429,027.92/76,163.60 - Step 6: Final answer
x = 102,193.55
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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.