Finding the Fourth Proportional to 157,115.24, 216,815.49 and 85,495.44
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Solution
The fourth proportional to 157,115.24, 216,815.49 and 85,495.44 is: 117,981.78
Step by Step Solution
- Step 1: Write the proportion equation
157,115.24 : 216,815.49 = 85,495.44 : x - Step 2: Convert to fraction form
157,115.24/216,815.49 = 85,495.44/x - Step 3: Cross multiply
157,115.24x = 216,815.49 × 85,495.44 - Step 4: Simplify right side
157,115.24x = 18,536,735,716.37 - Step 5: Solve for x
x = 18,536,735,716.37/157,115.24 - Step 6: Final answer
x = 117,981.78
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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.