Finding the Fourth Proportional to 103,181.20, 154,771.81 and 68,112.65
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Solution
The fourth proportional to 103,181.20, 154,771.81 and 68,112.65 is: 102,168.99
Step by Step Solution
- Step 1: Write the proportion equation
103,181.20 : 154,771.81 = 68,112.65 : x - Step 2: Convert to fraction form
103,181.20/154,771.81 = 68,112.65/x - Step 3: Cross multiply
103,181.20x = 154,771.81 × 68,112.65 - Step 4: Simplify right side
103,181.20x = 10,541,918,341.04 - Step 5: Solve for x
x = 10,541,918,341.04/103,181.20 - Step 6: Final answer
x = 102,168.99
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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.