Finding the Fourth Proportional to 138,830.79, 208,246.17 and 33,649.75
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Solution
The fourth proportional to 138,830.79, 208,246.17 and 33,649.75 is: 50,474.62
Step by Step Solution
- Step 1: Write the proportion equation
138,830.79 : 208,246.17 = 33,649.75 : x - Step 2: Convert to fraction form
138,830.79/208,246.17 = 33,649.75/x - Step 3: Cross multiply
138,830.79x = 208,246.17 × 33,649.75 - Step 4: Simplify right side
138,830.79x = 7,007,431,558.96 - Step 5: Solve for x
x = 7,007,431,558.96/138,830.79 - Step 6: Final answer
x = 50,474.62
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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.