Finding the Fourth Proportional to 157,361.93, 217,153.36 and 85,742.49
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Solution
The fourth proportional to 157,361.93, 217,153.36 and 85,742.49 is: 118,321.31
Step by Step Solution
- Step 1: Write the proportion equation
157,361.93 : 217,153.36 = 85,742.49 : x - Step 2: Convert to fraction form
157,361.93/217,153.36 = 85,742.49/x - Step 3: Cross multiply
157,361.93x = 217,153.36 × 85,742.49 - Step 4: Simplify right side
157,361.93x = 18,619,269,798.27 - Step 5: Solve for x
x = 18,619,269,798.27/157,361.93 - Step 6: Final answer
x = 118,321.31
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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.