Finding the Fourth Proportional to 136,645.10, 203,609.20 and 121,739.48
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Solution
The fourth proportional to 136,645.10, 203,609.20 and 121,739.48 is: 181,398.95
Step by Step Solution
- Step 1: Write the proportion equation
136,645.10 : 203,609.20 = 121,739.48 : x - Step 2: Convert to fraction form
136,645.10/203,609.20 = 121,739.48/x - Step 3: Cross multiply
136,645.10x = 203,609.20 × 121,739.48 - Step 4: Simplify right side
136,645.10x = 24,787,278,131.22 - Step 5: Solve for x
x = 24,787,278,131.22/136,645.10 - Step 6: Final answer
x = 181,398.95
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.