Finding the Fourth Proportional to 159,198.99, 219,698.02 and 87,578.99
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Solution
The fourth proportional to 159,198.99, 219,698.02 and 87,578.99 is: 120,860.89
Step by Step Solution
- Step 1: Write the proportion equation
159,198.99 : 219,698.02 = 87,578.99 : x - Step 2: Convert to fraction form
159,198.99/219,698.02 = 87,578.99/x - Step 3: Cross multiply
159,198.99x = 219,698.02 × 87,578.99 - Step 4: Simplify right side
159,198.99x = 19,240,930,531.45 - Step 5: Solve for x
x = 19,240,930,531.45/159,198.99 - Step 6: Final answer
x = 120,860.89
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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.