Finding the Fourth Proportional to 157,896.79, 217,897.62 and 85,299.70
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Solution
The fourth proportional to 157,896.79, 217,897.62 and 85,299.70 is: 117,713.61
Step by Step Solution
- Step 1: Write the proportion equation
157,896.79 : 217,897.62 = 85,299.70 : x - Step 2: Convert to fraction form
157,896.79/217,897.62 = 85,299.70/x - Step 3: Cross multiply
157,896.79x = 217,897.62 × 85,299.70 - Step 4: Simplify right side
157,896.79x = 18,586,601,616.71 - Step 5: Solve for x
x = 18,586,601,616.71/157,896.79 - Step 6: Final answer
x = 117,713.61
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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.