Finding the Fourth Proportional to 131,163.21, 181,035.48 and 76,740.70
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Solution
The fourth proportional to 131,163.21, 181,035.48 and 76,740.70 is: 105,919.87
Step by Step Solution
- Step 1: Write the proportion equation
131,163.21 : 181,035.48 = 76,740.70 : x - Step 2: Convert to fraction form
131,163.21/181,035.48 = 76,740.70/x - Step 3: Cross multiply
131,163.21x = 181,035.48 × 76,740.70 - Step 4: Simplify right side
131,163.21x = 13,892,789,418.83 - Step 5: Solve for x
x = 13,892,789,418.83/131,163.21 - Step 6: Final answer
x = 105,919.87
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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.