Finding the Fourth Proportional to 121,183.80, 181,775.70 and 68,695.80
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Solution
The fourth proportional to 121,183.80, 181,775.70 and 68,695.80 is: 103,043.70
Step by Step Solution
- Step 1: Write the proportion equation
121,183.80 : 181,775.70 = 68,695.80 : x - Step 2: Convert to fraction form
121,183.80/181,775.70 = 68,695.80/x - Step 3: Cross multiply
121,183.80x = 181,775.70 × 68,695.80 - Step 4: Simplify right side
121,183.80x = 12,487,227,132.06 - Step 5: Solve for x
x = 12,487,227,132.06/121,183.80 - Step 6: Final answer
x = 103,043.70
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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.