Finding the Fourth Proportional to 151,129.13, 208,558.21 and 83,144.65
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Solution
The fourth proportional to 151,129.13, 208,558.21 and 83,144.65 is: 114,739.62
Step by Step Solution
- Step 1: Write the proportion equation
151,129.13 : 208,558.21 = 83,144.65 : x - Step 2: Convert to fraction form
151,129.13/208,558.21 = 83,144.65/x - Step 3: Cross multiply
151,129.13x = 208,558.21 × 83,144.65 - Step 4: Simplify right side
151,129.13x = 17,340,499,375.08 - Step 5: Solve for x
x = 17,340,499,375.08/151,129.13 - Step 6: Final answer
x = 114,739.62
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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.