Finding the Fourth Proportional to 159,121.44, 219,589.20 and 87,501.99
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Solution
The fourth proportional to 159,121.44, 219,589.20 and 87,501.99 is: 120,753.63
Step by Step Solution
- Step 1: Write the proportion equation
159,121.44 : 219,589.20 = 87,501.99 : x - Step 2: Convert to fraction form
159,121.44/219,589.20 = 87,501.99/x - Step 3: Cross multiply
159,121.44x = 219,589.20 × 87,501.99 - Step 4: Simplify right side
159,121.44x = 19,214,491,982.51 - Step 5: Solve for x
x = 19,214,491,982.51/159,121.44 - Step 6: Final answer
x = 120,753.63
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1.5x scale
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.