Finding the Fourth Proportional to 189,816.79, 261,948.36 and 103,775.97
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Solution
The fourth proportional to 189,816.79, 261,948.36 and 103,775.97 is: 143,211.49
Step by Step Solution
- Step 1: Write the proportion equation
189,816.79 : 261,948.36 = 103,775.97 : x - Step 2: Convert to fraction form
189,816.79/261,948.36 = 103,775.97/x - Step 3: Cross multiply
189,816.79x = 261,948.36 × 103,775.97 - Step 4: Simplify right side
189,816.79x = 27,183,945,148.91 - Step 5: Solve for x
x = 27,183,945,148.91/189,816.79 - Step 6: Final answer
x = 143,211.49
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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.