Finding the Fourth Proportional to 189,644.49, 261,687.11 and 104,756.49
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Solution
The fourth proportional to 189,644.49, 261,687.11 and 104,756.49 is: 144,551.64
Step by Step Solution
- Step 1: Write the proportion equation
189,644.49 : 261,687.11 = 104,756.49 : x - Step 2: Convert to fraction form
189,644.49/261,687.11 = 104,756.49/x - Step 3: Cross multiply
189,644.49x = 261,687.11 × 104,756.49 - Step 4: Simplify right side
189,644.49x = 27,413,422,598.06 - Step 5: Solve for x
x = 27,413,422,598.06/189,644.49 - Step 6: Final answer
x = 144,551.64
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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.