Finding the Fourth Proportional to 131,163.18, 181,005.21 and 74,578.02
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Solution
The fourth proportional to 131,163.18, 181,005.21 and 74,578.02 is: 102,917.68
Step by Step Solution
- Step 1: Write the proportion equation
131,163.18 : 181,005.21 = 74,578.02 : x - Step 2: Convert to fraction form
131,163.18/181,005.21 = 74,578.02/x - Step 3: Cross multiply
131,163.18x = 181,005.21 × 74,578.02 - Step 4: Simplify right side
131,163.18x = 13,499,010,171.48 - Step 5: Solve for x
x = 13,499,010,171.48/131,163.18 - Step 6: Final answer
x = 102,917.68
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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.