Finding the Fourth Proportional to 112,520.88, 155,137.68 and 72,163.44
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Solution
The fourth proportional to 112,520.88, 155,137.68 and 72,163.44 is: 99,495.03
Step by Step Solution
- Step 1: Write the proportion equation
112,520.88 : 155,137.68 = 72,163.44 : x - Step 2: Convert to fraction form
112,520.88/155,137.68 = 72,163.44/x - Step 3: Cross multiply
112,520.88x = 155,137.68 × 72,163.44 - Step 4: Simplify right side
112,520.88x = 11,195,268,662.42 - Step 5: Solve for x
x = 11,195,268,662.42/112,520.88 - Step 6: Final answer
x = 99,495.03
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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.