Finding the Fourth Proportional to 157,940.67, 217,958.13 and 86,320.68
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Solution
The fourth proportional to 157,940.67, 217,958.13 and 86,320.68 is: 119,122.54
Step by Step Solution
- Step 1: Write the proportion equation
157,940.67 : 217,958.13 = 86,320.68 : x - Step 2: Convert to fraction form
157,940.67/217,958.13 = 86,320.68/x - Step 3: Cross multiply
157,940.67x = 217,958.13 × 86,320.68 - Step 4: Simplify right side
157,940.67x = 18,814,293,993.13 - Step 5: Solve for x
x = 18,814,293,993.13/157,940.67 - Step 6: Final answer
x = 119,122.54
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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.