Finding the Fourth Proportional to 129,220.56, 193,831.14 and 40,481.82
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Solution
The fourth proportional to 129,220.56, 193,831.14 and 40,481.82 is: 60,722.82
Step by Step Solution
- Step 1: Write the proportion equation
129,220.56 : 193,831.14 = 40,481.82 : x - Step 2: Convert to fraction form
129,220.56/193,831.14 = 40,481.82/x - Step 3: Cross multiply
129,220.56x = 193,831.14 × 40,481.82 - Step 4: Simplify right side
129,220.56x = 7,846,637,319.87 - Step 5: Solve for x
x = 7,846,637,319.87/129,220.56 - Step 6: Final answer
x = 60,722.82
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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.