Finding the Fourth Proportional to 107,419.14, 161,139.87 and 51,249.78
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Solution
The fourth proportional to 107,419.14, 161,139.87 and 51,249.78 is: 76,879.99
Step by Step Solution
- Step 1: Write the proportion equation
107,419.14 : 161,139.87 = 51,249.78 : x - Step 2: Convert to fraction form
107,419.14/161,139.87 = 51,249.78/x - Step 3: Cross multiply
107,419.14x = 161,139.87 × 51,249.78 - Step 4: Simplify right side
107,419.14x = 8,258,382,886.73 - Step 5: Solve for x
x = 8,258,382,886.73/107,419.14 - Step 6: Final answer
x = 76,879.99
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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.