Finding the Fourth Proportional to 157,897.05, 217,897.98 and 85,299.96
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Solution
The fourth proportional to 157,897.05, 217,897.98 and 85,299.96 is: 117,713.97
Step by Step Solution
- Step 1: Write the proportion equation
157,897.05 : 217,897.98 = 85,299.96 : x - Step 2: Convert to fraction form
157,897.05/217,897.98 = 85,299.96/x - Step 3: Cross multiply
157,897.05x = 217,897.98 × 85,299.96 - Step 4: Simplify right side
157,897.05x = 18,586,688,978.08 - Step 5: Solve for x
x = 18,586,688,978.08/157,897.05 - Step 6: Final answer
x = 117,713.97
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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.