Finding the Fourth Proportional to 157,812.83, 217,778.34 and 86,193.14
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Solution
The fourth proportional to 157,812.83, 217,778.34 and 86,193.14 is: 118,944.70
Step by Step Solution
- Step 1: Write the proportion equation
157,812.83 : 217,778.34 = 86,193.14 : x - Step 2: Convert to fraction form
157,812.83/217,778.34 = 86,193.14/x - Step 3: Cross multiply
157,812.83x = 217,778.34 × 86,193.14 - Step 4: Simplify right side
157,812.83x = 18,770,998,948.59 - Step 5: Solve for x
x = 18,770,998,948.59/157,812.83 - Step 6: Final answer
x = 118,944.70
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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.