Finding the Fourth Proportional to 144,443,694.24, 199,332,676.58 and 78,364,189.08
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Solution
The fourth proportional to 144,443,694.24, 199,332,676.58 and 78,364,189.08 is: 108,142,786.29
Step by Step Solution
- Step 1: Write the proportion equation
144,443,694.24 : 199,332,676.58 = 78,364,189.08 : x - Step 2: Convert to fraction form
144,443,694.24/199,332,676.58 = 78,364,189.08/x - Step 3: Cross multiply
144,443,694.24x = 199,332,676.58 × 78,364,189.08 - Step 4: Simplify right side
144,443,694.24x = 15,620,543,557,337,608 - Step 5: Solve for x
x = 15,620,543,557,337,608/144,443,694.24 - Step 6: Final answer
x = 108,142,786.29
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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.