Finding the Fourth Proportional to 129,614.37, 194,403.05 and 40,856.32
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Solution
The fourth proportional to 129,614.37, 194,403.05 and 40,856.32 is: 61,278.65
Step by Step Solution
- Step 1: Write the proportion equation
129,614.37 : 194,403.05 = 40,856.32 : x - Step 2: Convert to fraction form
129,614.37/194,403.05 = 40,856.32/x - Step 3: Cross multiply
129,614.37x = 194,403.05 × 40,856.32 - Step 4: Simplify right side
129,614.37x = 7,942,593,219.78 - Step 5: Solve for x
x = 7,942,593,219.78/129,614.37 - Step 6: Final answer
x = 61,278.65
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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.