Finding the Fourth Proportional to 157,936.14, 217,951.34 and 86,316.14
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Solution
The fourth proportional to 157,936.14, 217,951.34 and 86,316.14 is: 119,115.98
Step by Step Solution
- Step 1: Write the proportion equation
157,936.14 : 217,951.34 = 86,316.14 : x - Step 2: Convert to fraction form
157,936.14/217,951.34 = 86,316.14/x - Step 3: Cross multiply
157,936.14x = 217,951.34 × 86,316.14 - Step 4: Simplify right side
157,936.14x = 18,812,718,376.63 - Step 5: Solve for x
x = 18,812,718,376.63/157,936.14 - Step 6: Final answer
x = 119,115.98
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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.