Finding the Fourth Proportional to 157,896.09, 217,890.18 and 86,278.59
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Solution
The fourth proportional to 157,896.09, 217,890.18 and 86,278.59 is: 119,060.94
Step by Step Solution
- Step 1: Write the proportion equation
157,896.09 : 217,890.18 = 86,278.59 : x - Step 2: Convert to fraction form
157,896.09/217,890.18 = 86,278.59/x - Step 3: Cross multiply
157,896.09x = 217,890.18 × 86,278.59 - Step 4: Simplify right side
157,896.09x = 18,799,257,505.25 - Step 5: Solve for x
x = 18,799,257,505.25/157,896.09 - Step 6: Final answer
x = 119,060.94
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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.