Finding the Fourth Proportional to 122,990.25, 169,369.23 and 106,850.19
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Solution
The fourth proportional to 122,990.25, 169,369.23 and 106,850.19 is: 147,142.84
Step by Step Solution
- Step 1: Write the proportion equation
122,990.25 : 169,369.23 = 106,850.19 : x - Step 2: Convert to fraction form
122,990.25/169,369.23 = 106,850.19/x - Step 3: Cross multiply
122,990.25x = 169,369.23 × 106,850.19 - Step 4: Simplify right side
122,990.25x = 18,097,134,405.65 - Step 5: Solve for x
x = 18,097,134,405.65/122,990.25 - Step 6: Final answer
x = 147,142.84
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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.