Finding the Fourth Proportional to 157,729.48, 217,685.78 and 89,762.99
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Solution
The fourth proportional to 157,729.48, 217,685.78 and 89,762.99 is: 123,883.79
Step by Step Solution
- Step 1: Write the proportion equation
157,729.48 : 217,685.78 = 89,762.99 : x - Step 2: Convert to fraction form
157,729.48/217,685.78 = 89,762.99/x - Step 3: Cross multiply
157,729.48x = 217,685.78 × 89,762.99 - Step 4: Simplify right side
157,729.48x = 19,540,125,292.65 - Step 5: Solve for x
x = 19,540,125,292.65/157,729.48 - Step 6: Final answer
x = 123,883.79
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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.