Finding the Fourth Proportional to 131,491.20, 197,128.80 and 56,668.80
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Solution
The fourth proportional to 131,491.20, 197,128.80 and 56,668.80 is: 84,956.66
Step by Step Solution
- Step 1: Write the proportion equation
131,491.20 : 197,128.80 = 56,668.80 : x - Step 2: Convert to fraction form
131,491.20/197,128.80 = 56,668.80/x - Step 3: Cross multiply
131,491.20x = 197,128.80 × 56,668.80 - Step 4: Simplify right side
131,491.20x = 11,171,052,541.44 - Step 5: Solve for x
x = 11,171,052,541.44/131,491.20 - Step 6: Final answer
x = 84,956.66
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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.