Finding the Fourth Proportional to 128,826.97, 193,149.90 and 56,745.67
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Solution
The fourth proportional to 128,826.97, 193,149.90 and 56,745.67 is: 85,078.62
Step by Step Solution
- Step 1: Write the proportion equation
128,826.97 : 193,149.90 = 56,745.67 : x - Step 2: Convert to fraction form
128,826.97/193,149.90 = 56,745.67/x - Step 3: Cross multiply
128,826.97x = 193,149.90 × 56,745.67 - Step 4: Simplify right side
128,826.97x = 10,960,420,485.93 - Step 5: Solve for x
x = 10,960,420,485.93/128,826.97 - Step 6: Final answer
x = 85,078.62
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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.