Finding the Fourth Proportional to 112,400.21, 155,107.68 and 61,414.69
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Solution
The fourth proportional to 112,400.21, 155,107.68 and 61,414.69 is: 84,749.75
Step by Step Solution
- Step 1: Write the proportion equation
112,400.21 : 155,107.68 = 61,414.69 : x - Step 2: Convert to fraction form
112,400.21/155,107.68 = 61,414.69/x - Step 3: Cross multiply
112,400.21x = 155,107.68 × 61,414.69 - Step 4: Simplify right side
112,400.21x = 9,525,890,049.71 - Step 5: Solve for x
x = 9,525,890,049.71/112,400.21 - Step 6: Final answer
x = 84,749.75
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1.5x scale
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.