Finding the Fourth Proportional to 189,161.43, 261,029.69 and 106,387.81
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Solution
The fourth proportional to 189,161.43, 261,029.69 and 106,387.81 is: 146,807.82
Step by Step Solution
- Step 1: Write the proportion equation
189,161.43 : 261,029.69 = 106,387.81 : x - Step 2: Convert to fraction form
189,161.43/261,029.69 = 106,387.81/x - Step 3: Cross multiply
189,161.43x = 261,029.69 × 106,387.81 - Step 4: Simplify right side
189,161.43x = 27,770,376,677.47 - Step 5: Solve for x
x = 27,770,376,677.47/189,161.43 - Step 6: Final answer
x = 146,807.82
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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.