Finding the Fourth Proportional to 135,855.40, 203,936.70 and 104,828.20
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Solution
The fourth proportional to 135,855.40, 203,936.70 and 104,828.20 is: 157,360.82
Step by Step Solution
- Step 1: Write the proportion equation
135,855.40 : 203,936.70 = 104,828.20 : x - Step 2: Convert to fraction form
135,855.40/203,936.70 = 104,828.20/x - Step 3: Cross multiply
135,855.40x = 203,936.70 × 104,828.20 - Step 4: Simplify right side
135,855.40x = 21,378,317,174.94 - Step 5: Solve for x
x = 21,378,317,174.94/135,855.40 - Step 6: Final answer
x = 157,360.82
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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.