Finding the Fourth Proportional to 138,533.44, 207,726.36 and 71,906.56
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Solution
The fourth proportional to 138,533.44, 207,726.36 and 71,906.56 is: 107,821.53
Step by Step Solution
- Step 1: Write the proportion equation
138,533.44 : 207,726.36 = 71,906.56 : x - Step 2: Convert to fraction form
138,533.44/207,726.36 = 71,906.56/x - Step 3: Cross multiply
138,533.44x = 207,726.36 × 71,906.56 - Step 4: Simplify right side
138,533.44x = 14,936,887,968.92 - Step 5: Solve for x
x = 14,936,887,968.92/138,533.44 - Step 6: Final answer
x = 107,821.53
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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.