Finding the Fourth Proportional to 120,718.70, 181,250.85 and 68,230.70
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Solution
The fourth proportional to 120,718.70, 181,250.85 and 68,230.70 is: 102,443.72
Step by Step Solution
- Step 1: Write the proportion equation
120,718.70 : 181,250.85 = 68,230.70 : x - Step 2: Convert to fraction form
120,718.70/181,250.85 = 68,230.70/x - Step 3: Cross multiply
120,718.70x = 181,250.85 × 68,230.70 - Step 4: Simplify right side
120,718.70x = 12,366,872,371.10 - Step 5: Solve for x
x = 12,366,872,371.10/120,718.70 - Step 6: Final answer
x = 102,443.72
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.