Finding the Fourth Proportional to 131,408.19, 181,357.56 and 80,455.23
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Solution
The fourth proportional to 131,408.19, 181,357.56 and 80,455.23 is: 111,036.95
Step by Step Solution
- Step 1: Write the proportion equation
131,408.19 : 181,357.56 = 80,455.23 : x - Step 2: Convert to fraction form
131,408.19/181,357.56 = 80,455.23/x - Step 3: Cross multiply
131,408.19x = 181,357.56 × 80,455.23 - Step 4: Simplify right side
131,408.19x = 14,591,164,202.04 - Step 5: Solve for x
x = 14,591,164,202.04/131,408.19 - Step 6: Final answer
x = 111,036.95
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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.