Finding the Fourth Proportional to 138,635.81, 207,955.33 and 48,680.75
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Solution
The fourth proportional to 138,635.81, 207,955.33 and 48,680.75 is: 73,021.69
Step by Step Solution
- Step 1: Write the proportion equation
138,635.81 : 207,955.33 = 48,680.75 : x - Step 2: Convert to fraction form
138,635.81/207,955.33 = 48,680.75/x - Step 3: Cross multiply
138,635.81x = 207,955.33 × 48,680.75 - Step 4: Simplify right side
138,635.81x = 10,123,421,430.90 - Step 5: Solve for x
x = 10,123,421,430.90/138,635.81 - Step 6: Final answer
x = 73,021.69
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.