Finding the Fourth Proportional to 189,163.84, 261,033.01 and 106,390.21
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Solution
The fourth proportional to 189,163.84, 261,033.01 and 106,390.21 is: 146,811.14
Step by Step Solution
- Step 1: Write the proportion equation
189,163.84 : 261,033.01 = 106,390.21 : x - Step 2: Convert to fraction form
189,163.84/261,033.01 = 106,390.21/x - Step 3: Cross multiply
189,163.84x = 261,033.01 × 106,390.21 - Step 4: Simplify right side
189,163.84x = 27,771,358,062.18 - Step 5: Solve for x
x = 27,771,358,062.18/189,163.84 - Step 6: Final answer
x = 146,811.14
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1.5x scale
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.