Finding the Fourth Proportional to 121,163.99, 167,346.29 and 80,807.62
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Solution
The fourth proportional to 121,163.99, 167,346.29 and 80,807.62 is: 111,607.87
Step by Step Solution
- Step 1: Write the proportion equation
121,163.99 : 167,346.29 = 80,807.62 : x - Step 2: Convert to fraction form
121,163.99/167,346.29 = 80,807.62/x - Step 3: Cross multiply
121,163.99x = 167,346.29 × 80,807.62 - Step 4: Simplify right side
121,163.99x = 13,522,855,410.73 - Step 5: Solve for x
x = 13,522,855,410.73/121,163.99 - Step 6: Final answer
x = 111,607.87
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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.