Finding the Fourth Proportional to 121,435.91, 167,581.23 and 67,720.99
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Solution
The fourth proportional to 121,435.91, 167,581.23 and 67,720.99 is: 93,454.78
Step by Step Solution
- Step 1: Write the proportion equation
121,435.91 : 167,581.23 = 67,720.99 : x - Step 2: Convert to fraction form
121,435.91/167,581.23 = 67,720.99/x - Step 3: Cross multiply
121,435.91x = 167,581.23 × 67,720.99 - Step 4: Simplify right side
121,435.91x = 11,348,766,161.47 - Step 5: Solve for x
x = 11,348,766,161.47/121,435.91 - Step 6: Final answer
x = 93,454.78
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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.