Finding the Fourth Proportional to 189,721.08, 261,815.18 and 104,838.14
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Solution
The fourth proportional to 189,721.08, 261,815.18 and 104,838.14 is: 144,676.68
Step by Step Solution
- Step 1: Write the proportion equation
189,721.08 : 261,815.18 = 104,838.14 : x - Step 2: Convert to fraction form
189,721.08/261,815.18 = 104,838.14/x - Step 3: Cross multiply
189,721.08x = 261,815.18 × 104,838.14 - Step 4: Simplify right side
189,721.08x = 27,448,216,494.97 - Step 5: Solve for x
x = 27,448,216,494.97/189,721.08 - Step 6: Final answer
x = 144,676.68
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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.