Finding the Fourth Proportional to 103,190.08, 154,785.15 and 68,121.53
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Solution
The fourth proportional to 103,190.08, 154,785.15 and 68,121.53 is: 102,182.32
Step by Step Solution
- Step 1: Write the proportion equation
103,190.08 : 154,785.15 = 68,121.53 : x - Step 2: Convert to fraction form
103,190.08/154,785.15 = 68,121.53/x - Step 3: Cross multiply
103,190.08x = 154,785.15 × 68,121.53 - Step 4: Simplify right side
103,190.08x = 10,544,200,898.67 - Step 5: Solve for x
x = 10,544,200,898.67/103,190.08 - Step 6: Final answer
x = 102,182.32
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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.