Finding the Fourth Proportional to 157,491.99, 217,338.93 and 85,872.20
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Solution
The fourth proportional to 157,491.99, 217,338.93 and 85,872.20 is: 118,503.62
Step by Step Solution
- Step 1: Write the proportion equation
157,491.99 : 217,338.93 = 85,872.20 : x - Step 2: Convert to fraction form
157,491.99/217,338.93 = 85,872.20/x - Step 3: Cross multiply
157,491.99x = 217,338.93 × 85,872.20 - Step 4: Simplify right side
157,491.99x = 18,663,370,978.05 - Step 5: Solve for x
x = 18,663,370,978.05/157,491.99 - Step 6: Final answer
x = 118,503.62
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1.5x scale
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.