Finding the Fourth Proportional to 120,352.32, 180,589.95 and 80,398.62
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Solution
The fourth proportional to 120,352.32, 180,589.95 and 80,398.62 is: 120,638.99
Step by Step Solution
- Step 1: Write the proportion equation
120,352.32 : 180,589.95 = 80,398.62 : x - Step 2: Convert to fraction form
120,352.32/180,589.95 = 80,398.62/x - Step 3: Cross multiply
120,352.32x = 180,589.95 × 80,398.62 - Step 4: Simplify right side
120,352.32x = 14,519,182,765.87 - Step 5: Solve for x
x = 14,519,182,765.87/120,352.32 - Step 6: Final answer
x = 120,638.99
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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.