Finding the Fourth Proportional to 138,575.18, 207,844.79 and 43,814.90
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Solution
The fourth proportional to 138,575.18, 207,844.79 and 43,814.90 is: 65,716.66
Step by Step Solution
- Step 1: Write the proportion equation
138,575.18 : 207,844.79 = 43,814.90 : x - Step 2: Convert to fraction form
138,575.18/207,844.79 = 43,814.90/x - Step 3: Cross multiply
138,575.18x = 207,844.79 × 43,814.90 - Step 4: Simplify right side
138,575.18x = 9,106,697,431.07 - Step 5: Solve for x
x = 9,106,697,431.07/138,575.18 - Step 6: Final answer
x = 65,716.66
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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.