Finding the Fourth Proportional to 138,349.22, 207,438.57 and 54,011.21
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Solution
The fourth proportional to 138,349.22, 207,438.57 and 54,011.21 is: 80,983.53
Step by Step Solution
- Step 1: Write the proportion equation
138,349.22 : 207,438.57 = 54,011.21 : x - Step 2: Convert to fraction form
138,349.22/207,438.57 = 54,011.21/x - Step 3: Cross multiply
138,349.22x = 207,438.57 × 54,011.21 - Step 4: Simplify right side
138,349.22x = 11,204,007,129.18 - Step 5: Solve for x
x = 11,204,007,129.18/138,349.22 - Step 6: Final answer
x = 80,983.53
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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.