Finding the Fourth Proportional to 138,246.40, 207,369.60 and 135,174.40
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Solution
The fourth proportional to 138,246.40, 207,369.60 and 135,174.40 is: 202,761.60
Step by Step Solution
- Step 1: Write the proportion equation
138,246.40 : 207,369.60 = 135,174.40 : x - Step 2: Convert to fraction form
138,246.40/207,369.60 = 135,174.40/x - Step 3: Cross multiply
138,246.40x = 207,369.60 × 135,174.40 - Step 4: Simplify right side
138,246.40x = 28,031,061,258.24 - Step 5: Solve for x
x = 28,031,061,258.24/138,246.40 - Step 6: Final answer
x = 202,761.60
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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.