Finding the Fourth Proportional to 155,367.28, 214,285.38 and 100,936.99
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Solution
The fourth proportional to 155,367.28, 214,285.38 and 100,936.99 is: 139,214.13
Step by Step Solution
- Step 1: Write the proportion equation
155,367.28 : 214,285.38 = 100,936.99 : x - Step 2: Convert to fraction form
155,367.28/214,285.38 = 100,936.99/x - Step 3: Cross multiply
155,367.28x = 214,285.38 × 100,936.99 - Step 4: Simplify right side
155,367.28x = 21,629,321,258.21 - Step 5: Solve for x
x = 21,629,321,258.21/155,367.28 - Step 6: Final answer
x = 139,214.13
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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.