Finding the Fourth Proportional to 159,556.10, 220,183.62 and 86,961.28
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Solution
The fourth proportional to 159,556.10, 220,183.62 and 86,961.28 is: 120,004.50
Step by Step Solution
- Step 1: Write the proportion equation
159,556.10 : 220,183.62 = 86,961.28 : x - Step 2: Convert to fraction form
159,556.10/220,183.62 = 86,961.28/x - Step 3: Cross multiply
159,556.10x = 220,183.62 × 86,961.28 - Step 4: Simplify right side
159,556.10x = 19,147,449,430.23 - Step 5: Solve for x
x = 19,147,449,430.23/159,556.10 - Step 6: Final answer
x = 120,004.50
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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.