Finding the Fourth Proportional to 154,923.67, 213,745.93 and 86,930.65
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Solution
The fourth proportional to 154,923.67, 213,745.93 and 86,930.65 is: 119,936.95
Step by Step Solution
- Step 1: Write the proportion equation
154,923.67 : 213,745.93 = 86,930.65 : x - Step 2: Convert to fraction form
154,923.67/213,745.93 = 86,930.65/x - Step 3: Cross multiply
154,923.67x = 213,745.93 × 86,930.65 - Step 4: Simplify right side
154,923.67x = 18,581,072,629.75 - Step 5: Solve for x
x = 18,581,072,629.75/154,923.67 - Step 6: Final answer
x = 119,936.95
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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.