Finding the Fourth Proportional to 181,742.99, 251,015.29 and 121,208.42
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Solution
The fourth proportional to 181,742.99, 251,015.29 and 121,208.42 is: 167,407.66
Step by Step Solution
- Step 1: Write the proportion equation
181,742.99 : 251,015.29 = 121,208.42 : x - Step 2: Convert to fraction form
181,742.99/251,015.29 = 121,208.42/x - Step 3: Cross multiply
181,742.99x = 251,015.29 × 121,208.42 - Step 4: Simplify right side
181,742.99x = 30,425,167,021.26 - Step 5: Solve for x
x = 30,425,167,021.26/181,742.99 - Step 6: Final answer
x = 167,407.66
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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.