Finding the Fourth Proportional to 138,912.17, 208,368.45 and 33,731.13
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Solution
The fourth proportional to 138,912.17, 208,368.45 and 33,731.13 is: 50,596.75
Step by Step Solution
- Step 1: Write the proportion equation
138,912.17 : 208,368.45 = 33,731.13 : x - Step 2: Convert to fraction form
138,912.17/208,368.45 = 33,731.13/x - Step 3: Cross multiply
138,912.17x = 208,368.45 × 33,731.13 - Step 4: Simplify right side
138,912.17x = 7,028,504,056.23 - Step 5: Solve for x
x = 7,028,504,056.23/138,912.17 - Step 6: Final answer
x = 50,596.75
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1.5x scale
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.