Finding the Fourth Proportional to 131,786.55, 197,678.06 and 31,947.62
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Solution
The fourth proportional to 131,786.55, 197,678.06 and 31,947.62 is: 47,920.99
Step by Step Solution
- Step 1: Write the proportion equation
131,786.55 : 197,678.06 = 31,947.62 : x - Step 2: Convert to fraction form
131,786.55/197,678.06 = 31,947.62/x - Step 3: Cross multiply
131,786.55x = 197,678.06 × 31,947.62 - Step 4: Simplify right side
131,786.55x = 6,315,342,395.09 - Step 5: Solve for x
x = 6,315,342,395.09/131,786.55 - Step 6: Final answer
x = 47,920.99
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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.