Finding the Fourth Proportional to 113,879.62, 157,153.98 and 63,578.62
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Solution
The fourth proportional to 113,879.62, 157,153.98 and 63,578.62 is: 87,738.55
Step by Step Solution
- Step 1: Write the proportion equation
113,879.62 : 157,153.98 = 63,578.62 : x - Step 2: Convert to fraction form
113,879.62/157,153.98 = 63,578.62/x - Step 3: Cross multiply
113,879.62x = 157,153.98 × 63,578.62 - Step 4: Simplify right side
113,879.62x = 9,991,633,175.91 - Step 5: Solve for x
x = 9,991,633,175.91/113,879.62 - Step 6: Final answer
x = 87,738.55
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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.