Finding the Fourth Proportional to 155,140.77, 214,115.84 and 87,163.00
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Solution
The fourth proportional to 155,140.77, 214,115.84 and 87,163.00 is: 120,297.06
Step by Step Solution
- Step 1: Write the proportion equation
155,140.77 : 214,115.84 = 87,163.00 : x - Step 2: Convert to fraction form
155,140.77/214,115.84 = 87,163.00/x - Step 3: Cross multiply
155,140.77x = 214,115.84 × 87,163.00 - Step 4: Simplify right side
155,140.77x = 18,662,978,986.50 - Step 5: Solve for x
x = 18,662,978,986.50/155,140.77 - Step 6: Final answer
x = 120,297.06
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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.