Finding the Fourth Proportional to 112,138.62, 154,745.37 and 63,734.08
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Solution
The fourth proportional to 112,138.62, 154,745.37 and 63,734.08 is: 87,949.66
Step by Step Solution
- Step 1: Write the proportion equation
112,138.62 : 154,745.37 = 63,734.08 : x - Step 2: Convert to fraction form
112,138.62/154,745.37 = 63,734.08/x - Step 3: Cross multiply
112,138.62x = 154,745.37 × 63,734.08 - Step 4: Simplify right side
112,138.62x = 9,862,553,791.21 - Step 5: Solve for x
x = 9,862,553,791.21/112,138.62 - Step 6: Final answer
x = 87,949.66
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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.