Finding the Fourth Proportional to 201,784.81, 278,464.91 and 111,143.99
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Solution
The fourth proportional to 201,784.81, 278,464.91 and 111,143.99 is: 153,379.74
Step by Step Solution
- Step 1: Write the proportion equation
201,784.81 : 278,464.91 = 111,143.99 : x - Step 2: Convert to fraction form
201,784.81/278,464.91 = 111,143.99/x - Step 3: Cross multiply
201,784.81x = 278,464.91 × 111,143.99 - Step 4: Simplify right side
201,784.81x = 30,949,701,102.17 - Step 5: Solve for x
x = 30,949,701,102.17/201,784.81 - Step 6: Final answer
x = 153,379.74
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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.