Finding the Fourth Proportional to 221,723.14, 305,977.94 and 121,121.14
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Solution
The fourth proportional to 221,723.14, 305,977.94 and 121,121.14 is: 167,147.18
Step by Step Solution
- Step 1: Write the proportion equation
221,723.14 : 305,977.94 = 121,121.14 : x - Step 2: Convert to fraction form
221,723.14/305,977.94 = 121,121.14/x - Step 3: Cross multiply
221,723.14x = 305,977.94 × 121,121.14 - Step 4: Simplify right side
221,723.14x = 37,060,396,907.65 - Step 5: Solve for x
x = 37,060,396,907.65/221,723.14 - Step 6: Final answer
x = 167,147.18
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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.