Finding the Fourth Proportional to 157,833.75, 217,809.27 and 86,213.79
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Solution
The fourth proportional to 157,833.75, 217,809.27 and 86,213.79 is: 118,974.32
Step by Step Solution
- Step 1: Write the proportion equation
157,833.75 : 217,809.27 = 86,213.79 : x - Step 2: Convert to fraction form
157,833.75/217,809.27 = 86,213.79/x - Step 3: Cross multiply
157,833.75x = 217,809.27 × 86,213.79 - Step 4: Simplify right side
157,833.75x = 18,778,162,663.83 - Step 5: Solve for x
x = 18,778,162,663.83/157,833.75 - Step 6: Final answer
x = 118,974.32
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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.