Finding the Fourth Proportional to 129,324.21, 178,408.77 and 93,457.41
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Solution
The fourth proportional to 129,324.21, 178,408.77 and 93,457.41 is: 128,928.85
Step by Step Solution
- Step 1: Write the proportion equation
129,324.21 : 178,408.77 = 93,457.41 : x - Step 2: Convert to fraction form
129,324.21/178,408.77 = 93,457.41/x - Step 3: Cross multiply
129,324.21x = 178,408.77 × 93,457.41 - Step 4: Simplify right side
129,324.21x = 16,673,621,565.49 - Step 5: Solve for x
x = 16,673,621,565.49/129,324.21 - Step 6: Final answer
x = 128,928.85
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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.