Finding the Fourth Proportional to 128,567.20, 192,850.80 and 58,583.20
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Solution
The fourth proportional to 128,567.20, 192,850.80 and 58,583.20 is: 87,874.80
Step by Step Solution
- Step 1: Write the proportion equation
128,567.20 : 192,850.80 = 58,583.20 : x - Step 2: Convert to fraction form
128,567.20/192,850.80 = 58,583.20/x - Step 3: Cross multiply
128,567.20x = 192,850.80 × 58,583.20 - Step 4: Simplify right side
128,567.20x = 11,297,816,986.56 - Step 5: Solve for x
x = 11,297,816,986.56/128,567.20 - Step 6: Final answer
x = 87,874.80
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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.