Finding the Fourth Proportional to 121,998.74, 168,358.23 and 68,283.75
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Solution
The fourth proportional to 121,998.74, 168,358.23 and 68,283.75 is: 94,231.56
Step by Step Solution
- Step 1: Write the proportion equation
121,998.74 : 168,358.23 = 68,283.75 : x - Step 2: Convert to fraction form
121,998.74/168,358.23 = 68,283.75/x - Step 3: Cross multiply
121,998.74x = 168,358.23 × 68,283.75 - Step 4: Simplify right side
121,998.74x = 11,496,131,287.76 - Step 5: Solve for x
x = 11,496,131,287.76/121,998.74 - Step 6: Final answer
x = 94,231.56
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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.