Finding the Fourth Proportional to 106,666.80, 160,129.80 and 80,163.60
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Solution
The fourth proportional to 106,666.80, 160,129.80 and 80,163.60 is: 120,342.80
Step by Step Solution
- Step 1: Write the proportion equation
106,666.80 : 160,129.80 = 80,163.60 : x - Step 2: Convert to fraction form
106,666.80/160,129.80 = 80,163.60/x - Step 3: Cross multiply
106,666.80x = 160,129.80 × 80,163.60 - Step 4: Simplify right side
106,666.80x = 12,836,581,235.28 - Step 5: Solve for x
x = 12,836,581,235.28/106,666.80 - Step 6: Final answer
x = 120,342.80
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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.