Finding the Fourth Proportional to 144,797.49, 199,817.87 and 81,135.09
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Solution
The fourth proportional to 144,797.49, 199,817.87 and 81,135.09 is: 111,964.93
Step by Step Solution
- Step 1: Write the proportion equation
144,797.49 : 199,817.87 = 81,135.09 : x - Step 2: Convert to fraction form
144,797.49/199,817.87 = 81,135.09/x - Step 3: Cross multiply
144,797.49x = 199,817.87 × 81,135.09 - Step 4: Simplify right side
144,797.49x = 16,212,240,460.38 - Step 5: Solve for x
x = 16,212,240,460.38/144,797.49 - Step 6: Final answer
x = 111,964.93
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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.