Finding the Fourth Proportional to 134,921.20, 186,190.42 and 74,491.31
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Solution
The fourth proportional to 134,921.20, 186,190.42 and 74,491.31 is: 102,797.55
Step by Step Solution
- Step 1: Write the proportion equation
134,921.20 : 186,190.42 = 74,491.31 : x - Step 2: Convert to fraction form
134,921.20/186,190.42 = 74,491.31/x - Step 3: Cross multiply
134,921.20x = 186,190.42 × 74,491.31 - Step 4: Simplify right side
134,921.20x = 13,869,568,550.47 - Step 5: Solve for x
x = 13,869,568,550.47/134,921.20 - Step 6: Final answer
x = 102,797.55
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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.