Finding the Fourth Proportional to 189,409.24, 261,479.37 and 117,812.26
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Solution
The fourth proportional to 189,409.24, 261,479.37 and 117,812.26 is: 162,639.77
Step by Step Solution
- Step 1: Write the proportion equation
189,409.24 : 261,479.37 = 117,812.26 : x - Step 2: Convert to fraction form
189,409.24/261,479.37 = 117,812.26/x - Step 3: Cross multiply
189,409.24x = 261,479.37 × 117,812.26 - Step 4: Simplify right side
189,409.24x = 30,805,475,523.08 - Step 5: Solve for x
x = 30,805,475,523.08/189,409.24 - Step 6: Final answer
x = 162,639.77
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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.