Finding the Fourth Proportional to 120,257.49, 180,448.48 and 87,249.99
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Solution
The fourth proportional to 120,257.49, 180,448.48 and 87,249.99 is: 130,920.15
Step by Step Solution
- Step 1: Write the proportion equation
120,257.49 : 180,448.48 = 87,249.99 : x - Step 2: Convert to fraction form
120,257.49/180,448.48 = 87,249.99/x - Step 3: Cross multiply
120,257.49x = 180,448.48 × 87,249.99 - Step 4: Simplify right side
120,257.49x = 15,744,128,522.92 - Step 5: Solve for x
x = 15,744,128,522.92/120,257.49 - Step 6: Final answer
x = 130,920.15
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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.