Finding the Fourth Proportional to 138,157.56, 207,236.36 and 49,405.68
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Solution
The fourth proportional to 138,157.56, 207,236.36 and 49,405.68 is: 74,108.53
Step by Step Solution
- Step 1: Write the proportion equation
138,157.56 : 207,236.36 = 49,405.68 : x - Step 2: Convert to fraction form
138,157.56/207,236.36 = 49,405.68/x - Step 3: Cross multiply
138,157.56x = 207,236.36 × 49,405.68 - Step 4: Simplify right side
138,157.56x = 10,238,653,039.50 - Step 5: Solve for x
x = 10,238,653,039.50/138,157.56 - Step 6: Final answer
x = 74,108.53
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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.