Finding the Fourth Proportional to 139,830.26, 192,960.30 and 85,473.43
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Solution
The fourth proportional to 139,830.26, 192,960.30 and 85,473.43 is: 117,949.99
Step by Step Solution
- Step 1: Write the proportion equation
139,830.26 : 192,960.30 = 85,473.43 : x - Step 2: Convert to fraction form
139,830.26/192,960.30 = 85,473.43/x - Step 3: Cross multiply
139,830.26x = 192,960.30 × 85,473.43 - Step 4: Simplify right side
139,830.26x = 16,492,977,785.06 - Step 5: Solve for x
x = 16,492,977,785.06/139,830.26 - Step 6: Final answer
x = 117,949.99
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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.