Finding the Fourth Proportional to 201,774.88, 278,446.72 and 111,129.12
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Solution
The fourth proportional to 201,774.88, 278,446.72 and 111,129.12 is: 153,356.75
Step by Step Solution
- Step 1: Write the proportion equation
201,774.88 : 278,446.72 = 111,129.12 : x - Step 2: Convert to fraction form
201,774.88/278,446.72 = 111,129.12/x - Step 3: Cross multiply
201,774.88x = 278,446.72 × 111,129.12 - Step 4: Simplify right side
201,774.88x = 30,943,538,960.49 - Step 5: Solve for x
x = 30,943,538,960.49/201,774.88 - Step 6: Final answer
x = 153,356.75
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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.