Finding the Fourth Proportional to 121,442.57, 182,018.50 and 85,850.05
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Solution
The fourth proportional to 121,442.57, 182,018.50 and 85,850.05 is: 128,672.32
Step by Step Solution
- Step 1: Write the proportion equation
121,442.57 : 182,018.50 = 85,850.05 : x - Step 2: Convert to fraction form
121,442.57/182,018.50 = 85,850.05/x - Step 3: Cross multiply
121,442.57x = 182,018.50 × 85,850.05 - Step 4: Simplify right side
121,442.57x = 15,626,297,325.93 - Step 5: Solve for x
x = 15,626,297,325.93/121,442.57 - Step 6: Final answer
x = 128,672.32
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.