Finding the Fourth Proportional to 103,803.14, 155,704.80 and 74,278.64
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Solution
The fourth proportional to 103,803.14, 155,704.80 and 74,278.64 is: 111,418.02
Step by Step Solution
- Step 1: Write the proportion equation
103,803.14 : 155,704.80 = 74,278.64 : x - Step 2: Convert to fraction form
103,803.14/155,704.80 = 74,278.64/x - Step 3: Cross multiply
103,803.14x = 155,704.80 × 74,278.64 - Step 4: Simplify right side
103,803.14x = 11,565,540,785.47 - Step 5: Solve for x
x = 11,565,540,785.47/103,803.14 - Step 6: Final answer
x = 111,418.02
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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.