Finding the Fourth Proportional to 139,475.87, 209,201.94 and 55,213.13
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Solution
The fourth proportional to 139,475.87, 209,201.94 and 55,213.13 is: 82,814.99
Step by Step Solution
- Step 1: Write the proportion equation
139,475.87 : 209,201.94 = 55,213.13 : x - Step 2: Convert to fraction form
139,475.87/209,201.94 = 55,213.13/x - Step 3: Cross multiply
139,475.87x = 209,201.94 × 55,213.13 - Step 4: Simplify right side
139,475.87x = 11,550,692,863.46 - Step 5: Solve for x
x = 11,550,692,863.46/139,475.87 - Step 6: Final answer
x = 82,814.99
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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.