Finding the Fourth Proportional to 138,579.56, 207,775.94 and 111,958.30
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Solution
The fourth proportional to 138,579.56, 207,775.94 and 111,958.30 is: 167,861.99
Step by Step Solution
- Step 1: Write the proportion equation
138,579.56 : 207,775.94 = 111,958.30 : x - Step 2: Convert to fraction form
138,579.56/207,775.94 = 111,958.30/x - Step 3: Cross multiply
138,579.56x = 207,775.94 × 111,958.30 - Step 4: Simplify right side
138,579.56x = 23,262,240,723.23 - Step 5: Solve for x
x = 23,262,240,723.23/138,579.56 - Step 6: Final answer
x = 167,861.99
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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.