Finding the Fourth Proportional to 160,819.21, 221,785.23 and 100,395.42
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Solution
The fourth proportional to 160,819.21, 221,785.23 and 100,395.42 is: 138,454.99
Step by Step Solution
- Step 1: Write the proportion equation
160,819.21 : 221,785.23 = 100,395.42 : x - Step 2: Convert to fraction form
160,819.21/221,785.23 = 100,395.42/x - Step 3: Cross multiply
160,819.21x = 221,785.23 × 100,395.42 - Step 4: Simplify right side
160,819.21x = 22,266,221,315.65 - Step 5: Solve for x
x = 22,266,221,315.65/160,819.21 - Step 6: Final answer
x = 138,454.99
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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.