Finding the Fourth Proportional to 138,974.40, 208,239.12 and 135,283.77
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Solution
The fourth proportional to 138,974.40, 208,239.12 and 135,283.77 is: 202,709.08
Step by Step Solution
- Step 1: Write the proportion equation
138,974.40 : 208,239.12 = 135,283.77 : x - Step 2: Convert to fraction form
138,974.40/208,239.12 = 135,283.77/x - Step 3: Cross multiply
138,974.40x = 208,239.12 × 135,283.77 - Step 4: Simplify right side
138,974.40x = 28,171,373,215.08 - Step 5: Solve for x
x = 28,171,373,215.08/138,974.40 - Step 6: Final answer
x = 202,709.08
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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.