Finding the Fourth Proportional to 138,913.14, 191,699.95 and 75,251.19
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Solution
The fourth proportional to 138,913.14, 191,699.95 and 75,251.19 is: 103,846.54
Step by Step Solution
- Step 1: Write the proportion equation
138,913.14 : 191,699.95 = 75,251.19 : x - Step 2: Convert to fraction form
138,913.14/191,699.95 = 75,251.19/x - Step 3: Cross multiply
138,913.14x = 191,699.95 × 75,251.19 - Step 4: Simplify right side
138,913.14x = 14,425,649,360.44 - Step 5: Solve for x
x = 14,425,649,360.44/138,913.14 - Step 6: Final answer
x = 103,846.54
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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.