Finding the Fourth Proportional to 102,149.10, 140,812.12 and 80,601.68
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Solution
The fourth proportional to 102,149.10, 140,812.12 and 80,601.68 is: 111,109.09
Step by Step Solution
- Step 1: Write the proportion equation
102,149.10 : 140,812.12 = 80,601.68 : x - Step 2: Convert to fraction form
102,149.10/140,812.12 = 80,601.68/x - Step 3: Cross multiply
102,149.10x = 140,812.12 × 80,601.68 - Step 4: Simplify right side
102,149.10x = 11,349,693,889.14 - Step 5: Solve for x
x = 11,349,693,889.14/102,149.10 - Step 6: Final answer
x = 111,109.09
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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.