Finding the Fourth Proportional to 189,694.71, 261,900.68 and 121,740.98
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Solution
The fourth proportional to 189,694.71, 261,900.68 and 121,740.98 is: 168,080.83
Step by Step Solution
- Step 1: Write the proportion equation
189,694.71 : 261,900.68 = 121,740.98 : x - Step 2: Convert to fraction form
189,694.71/261,900.68 = 121,740.98/x - Step 3: Cross multiply
189,694.71x = 261,900.68 × 121,740.98 - Step 4: Simplify right side
189,694.71x = 31,884,043,527.66 - Step 5: Solve for x
x = 31,884,043,527.66/189,694.71 - Step 6: Final answer
x = 168,080.83
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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.