Finding the Fourth Proportional to 157,037.99, 216,713.07 and 85,418.45
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Solution
The fourth proportional to 157,037.99, 216,713.07 and 85,418.45 is: 117,877.81
Step by Step Solution
- Step 1: Write the proportion equation
157,037.99 : 216,713.07 = 85,418.45 : x - Step 2: Convert to fraction form
157,037.99/216,713.07 = 85,418.45/x - Step 3: Cross multiply
157,037.99x = 216,713.07 × 85,418.45 - Step 4: Simplify right side
157,037.99x = 18,511,294,107.05 - Step 5: Solve for x
x = 18,511,294,107.05/157,037.99 - Step 6: Final answer
x = 117,877.81
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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.