Finding the Fourth Proportional to 113,138.85, 156,114.28 and 65,382.99
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Solution
The fourth proportional to 113,138.85, 156,114.28 and 65,382.99 is: 90,218.51
Step by Step Solution
- Step 1: Write the proportion equation
113,138.85 : 156,114.28 = 65,382.99 : x - Step 2: Convert to fraction form
113,138.85/156,114.28 = 65,382.99/x - Step 3: Cross multiply
113,138.85x = 156,114.28 × 65,382.99 - Step 4: Simplify right side
113,138.85x = 10,207,218,408.10 - Step 5: Solve for x
x = 10,207,218,408.10/113,138.85 - Step 6: Final answer
x = 90,218.51
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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.