Finding the Fourth Proportional to 120,303,806.15, 166,014,956.95 and 68,091,720.81
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Solution
The fourth proportional to 120,303,806.15, 166,014,956.95 and 68,091,720.81 is: 93,964,143.45
Step by Step Solution
- Step 1: Write the proportion equation
120,303,806.15 : 166,014,956.95 = 68,091,720.81 : x - Step 2: Convert to fraction form
120,303,806.15/166,014,956.95 = 68,091,720.81/x - Step 3: Cross multiply
120,303,806.15x = 166,014,956.95 × 68,091,720.81 - Step 4: Simplify right side
120,303,806.15x = 11,304,244,098,923,568 - Step 5: Solve for x
x = 11,304,244,098,923,568/120,303,806.15 - Step 6: Final answer
x = 93,964,143.45
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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.