Finding the Fourth Proportional to 201,771.68, 278,441.48 and 111,136.12
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Solution
The fourth proportional to 201,771.68, 278,441.48 and 111,136.12 is: 153,365.95
Step by Step Solution
- Step 1: Write the proportion equation
201,771.68 : 278,441.48 = 111,136.12 : x - Step 2: Convert to fraction form
201,771.68/278,441.48 = 111,136.12/x - Step 3: Cross multiply
201,771.68x = 278,441.48 × 111,136.12 - Step 4: Simplify right side
201,771.68x = 30,944,905,315.99 - Step 5: Solve for x
x = 30,944,905,315.99/201,771.68 - Step 6: Final answer
x = 153,365.95
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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.