Finding the Fourth Proportional to 181,957.26, 251,205.21 and 121,630.08
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Solution
The fourth proportional to 181,957.26, 251,205.21 and 121,630.08 is: 167,919.16
Step by Step Solution
- Step 1: Write the proportion equation
181,957.26 : 251,205.21 = 121,630.08 : x - Step 2: Convert to fraction form
181,957.26/251,205.21 = 121,630.08/x - Step 3: Cross multiply
181,957.26x = 251,205.21 × 121,630.08 - Step 4: Simplify right side
181,957.26x = 30,554,109,788.72 - Step 5: Solve for x
x = 30,554,109,788.72/181,957.26 - Step 6: Final answer
x = 167,919.16
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1.5x scale
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.