Finding the Fourth Proportional to 121,236.60, 181,879.38 and 51,115.80
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Solution
The fourth proportional to 121,236.60, 181,879.38 and 51,115.80 is: 76,684.02
Step by Step Solution
- Step 1: Write the proportion equation
121,236.60 : 181,879.38 = 51,115.80 : x - Step 2: Convert to fraction form
121,236.60/181,879.38 = 51,115.80/x - Step 3: Cross multiply
121,236.60x = 181,879.38 × 51,115.80 - Step 4: Simplify right side
121,236.60x = 9,296,910,012.20 - Step 5: Solve for x
x = 9,296,910,012.20/121,236.60 - Step 6: Final answer
x = 76,684.02
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.