Finding the Fourth Proportional to 133,163.70, 183,769.93 and 72,737.60
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Solution
The fourth proportional to 133,163.70, 183,769.93 and 72,737.60 is: 100,380.09
Step by Step Solution
- Step 1: Write the proportion equation
133,163.70 : 183,769.93 = 72,737.60 : x - Step 2: Convert to fraction form
133,163.70/183,769.93 = 72,737.60/x - Step 3: Cross multiply
133,163.70x = 183,769.93 × 72,737.60 - Step 4: Simplify right side
133,163.70x = 13,366,983,660.37 - Step 5: Solve for x
x = 13,366,983,660.37/133,163.70 - Step 6: Final answer
x = 100,380.09
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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.