Finding the Fourth Proportional to 120,372,609.36, 166,165,056.54 and 81,267,358.08
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Solution
The fourth proportional to 120,372,609.36, 166,165,056.54 and 81,267,358.08 is: 112,183,288.39
Step by Step Solution
- Step 1: Write the proportion equation
120,372,609.36 : 166,165,056.54 = 81,267,358.08 : x - Step 2: Convert to fraction form
120,372,609.36/166,165,056.54 = 81,267,358.08/x - Step 3: Cross multiply
120,372,609.36x = 166,165,056.54 × 81,267,358.08 - Step 4: Simplify right side
120,372,609.36x = 13,503,795,150,219,624 - Step 5: Solve for x
x = 13,503,795,150,219,624/120,372,609.36 - Step 6: Final answer
x = 112,183,288.39
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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.