Finding the Fourth Proportional to 121,281.80, 181,922.70 and 68,793.80
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Solution
The fourth proportional to 121,281.80, 181,922.70 and 68,793.80 is: 103,190.70
Step by Step Solution
- Step 1: Write the proportion equation
121,281.80 : 181,922.70 = 68,793.80 : x - Step 2: Convert to fraction form
121,281.80/181,922.70 = 68,793.80/x - Step 3: Cross multiply
121,281.80x = 181,922.70 × 68,793.80 - Step 4: Simplify right side
121,281.80x = 12,515,153,839.26 - Step 5: Solve for x
x = 12,515,153,839.26/121,281.80 - Step 6: Final answer
x = 103,190.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.