Finding the Fourth Proportional to 103,989.11, 155,889.18 and 54,010.68
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Solution
The fourth proportional to 103,989.11, 155,889.18 and 54,010.68 is: 80,966.95
Step by Step Solution
- Step 1: Write the proportion equation
103,989.11 : 155,889.18 = 54,010.68 : x - Step 2: Convert to fraction form
103,989.11/155,889.18 = 54,010.68/x - Step 3: Cross multiply
103,989.11x = 155,889.18 × 54,010.68 - Step 4: Simplify right side
103,989.11x = 8,419,680,616.44 - Step 5: Solve for x
x = 8,419,680,616.44/103,989.11 - Step 6: Final answer
x = 80,966.95
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.