Finding the Fourth Proportional to 185,640.19, 278,415.68 and 85,704.37
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Solution
The fourth proportional to 185,640.19, 278,415.68 and 85,704.37 is: 128,535.96
Step by Step Solution
- Step 1: Write the proportion equation
185,640.19 : 278,415.68 = 85,704.37 : x - Step 2: Convert to fraction form
185,640.19/278,415.68 = 85,704.37/x - Step 3: Cross multiply
185,640.19x = 278,415.68 × 85,704.37 - Step 4: Simplify right side
185,640.19x = 23,861,439,810.05 - Step 5: Solve for x
x = 23,861,439,810.05/185,640.19 - Step 6: Final answer
x = 128,535.96
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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.