Finding the Fourth Proportional to 131,751.69, 181,694.52 and 121,966.08
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Solution
The fourth proportional to 131,751.69, 181,694.52 and 121,966.08 is: 168,199.50
Step by Step Solution
- Step 1: Write the proportion equation
131,751.69 : 181,694.52 = 121,966.08 : x - Step 2: Convert to fraction form
131,751.69/181,694.52 = 121,966.08/x - Step 3: Cross multiply
131,751.69x = 181,694.52 × 121,966.08 - Step 4: Simplify right side
131,751.69x = 22,160,568,361.88 - Step 5: Solve for x
x = 22,160,568,361.88/131,751.69 - Step 6: Final answer
x = 168,199.50
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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.