Finding the Fourth Proportional to 103,734.10, 155,212.35 and 68,742.10
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Solution
The fourth proportional to 103,734.10, 155,212.35 and 68,742.10 is: 102,855.50
Step by Step Solution
- Step 1: Write the proportion equation
103,734.10 : 155,212.35 = 68,742.10 : x - Step 2: Convert to fraction form
103,734.10/155,212.35 = 68,742.10/x - Step 3: Cross multiply
103,734.10x = 155,212.35 × 68,742.10 - Step 4: Simplify right side
103,734.10x = 10,669,622,884.94 - Step 5: Solve for x
x = 10,669,622,884.94/103,734.10 - Step 6: Final answer
x = 102,855.50
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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.