Finding the Fourth Proportional to 121,205.40, 167,234.94 and 73,447.80
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Solution
The fourth proportional to 121,205.40, 167,234.94 and 73,447.80 is: 101,340.69
Step by Step Solution
- Step 1: Write the proportion equation
121,205.40 : 167,234.94 = 73,447.80 : x - Step 2: Convert to fraction form
121,205.40/167,234.94 = 73,447.80/x - Step 3: Cross multiply
121,205.40x = 167,234.94 × 73,447.80 - Step 4: Simplify right side
121,205.40x = 12,283,038,426.13 - Step 5: Solve for x
x = 12,283,038,426.13/121,205.40 - Step 6: Final answer
x = 101,340.69
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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.