Finding the Fourth Proportional to 126,021.76, 173,903.16 and 69,428.68
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Solution
The fourth proportional to 126,021.76, 173,903.16 and 69,428.68 is: 95,807.79
Step by Step Solution
- Step 1: Write the proportion equation
126,021.76 : 173,903.16 = 69,428.68 : x - Step 2: Convert to fraction form
126,021.76/173,903.16 = 69,428.68/x - Step 3: Cross multiply
126,021.76x = 173,903.16 × 69,428.68 - Step 4: Simplify right side
126,021.76x = 12,073,866,846.63 - Step 5: Solve for x
x = 12,073,866,846.63/126,021.76 - Step 6: Final answer
x = 95,807.79
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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.