Finding the Fourth Proportional to 138,761.27, 191,491.11 and 75,099.05
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Solution
The fourth proportional to 138,761.27, 191,491.11 and 75,099.05 is: 103,636.99
Step by Step Solution
- Step 1: Write the proportion equation
138,761.27 : 191,491.11 = 75,099.05 : x - Step 2: Convert to fraction form
138,761.27/191,491.11 = 75,099.05/x - Step 3: Cross multiply
138,761.27x = 191,491.11 × 75,099.05 - Step 4: Simplify right side
138,761.27x = 14,380,799,560.90 - Step 5: Solve for x
x = 14,380,799,560.90/138,761.27 - Step 6: Final answer
x = 103,636.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.