Finding the Fourth Proportional to 157,389.26, 217,197.18 and 85,769.35
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Solution
The fourth proportional to 157,389.26, 217,197.18 and 85,769.35 is: 118,361.70
Step by Step Solution
- Step 1: Write the proportion equation
157,389.26 : 217,197.18 = 85,769.35 : x - Step 2: Convert to fraction form
157,389.26/217,197.18 = 85,769.35/x - Step 3: Cross multiply
157,389.26x = 217,197.18 × 85,769.35 - Step 4: Simplify right side
157,389.26x = 18,628,860,950.43 - Step 5: Solve for x
x = 18,628,860,950.43/157,389.26 - Step 6: Final answer
x = 118,361.70
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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.