Finding the Fourth Proportional to 131,983.09, 182,163.14 and 78,297.91
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Solution
The fourth proportional to 131,983.09, 182,163.14 and 78,297.91 is: 108,066.82
Step by Step Solution
- Step 1: Write the proportion equation
131,983.09 : 182,163.14 = 78,297.91 : x - Step 2: Convert to fraction form
131,983.09/182,163.14 = 78,297.91/x - Step 3: Cross multiply
131,983.09x = 182,163.14 × 78,297.91 - Step 4: Simplify right side
131,983.09x = 14,262,992,749.55 - Step 5: Solve for x
x = 14,262,992,749.55/131,983.09 - Step 6: Final answer
x = 108,066.82
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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.