Finding the Fourth Proportional to 138,212.58, 207,187.50 and 54,026.70
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Solution
The fourth proportional to 138,212.58, 207,187.50 and 54,026.70 is: 80,988.70
Step by Step Solution
- Step 1: Write the proportion equation
138,212.58 : 207,187.50 = 54,026.70 : x - Step 2: Convert to fraction form
138,212.58/207,187.50 = 54,026.70/x - Step 3: Cross multiply
138,212.58x = 207,187.50 × 54,026.70 - Step 4: Simplify right side
138,212.58x = 11,193,656,906.25 - Step 5: Solve for x
x = 11,193,656,906.25/138,212.58 - Step 6: Final answer
x = 80,988.70
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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.