Finding the Fourth Proportional to 201,852.75, 278,556.80 and 112,428.75
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Solution
The fourth proportional to 201,852.75, 278,556.80 and 112,428.75 is: 155,151.68
Step by Step Solution
- Step 1: Write the proportion equation
201,852.75 : 278,556.80 = 112,428.75 : x - Step 2: Convert to fraction form
201,852.75/278,556.80 = 112,428.75/x - Step 3: Cross multiply
201,852.75x = 278,556.80 × 112,428.75 - Step 4: Simplify right side
201,852.75x = 31,317,792,828 - Step 5: Solve for x
x = 31,317,792,828/201,852.75 - Step 6: Final answer
x = 155,151.68
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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.