Finding the Fourth Proportional to 129,902.44, 194,831.70 and 36,386.68
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Solution
The fourth proportional to 129,902.44, 194,831.70 and 36,386.68 is: 54,573.87
Step by Step Solution
- Step 1: Write the proportion equation
129,902.44 : 194,831.70 = 36,386.68 : x - Step 2: Convert to fraction form
129,902.44/194,831.70 = 36,386.68/x - Step 3: Cross multiply
129,902.44x = 194,831.70 × 36,386.68 - Step 4: Simplify right side
129,902.44x = 7,089,278,721.76 - Step 5: Solve for x
x = 7,089,278,721.76/129,902.44 - Step 6: Final answer
x = 54,573.87
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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.