Finding the Fourth Proportional to 120,372,753.58, 166,165,250.52 and 81,267,498.65
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Solution
The fourth proportional to 120,372,753.58, 166,165,250.52 and 81,267,498.65 is: 112,183,478.99
Step by Step Solution
- Step 1: Write the proportion equation
120,372,753.58 : 166,165,250.52 = 81,267,498.65 : x - Step 2: Convert to fraction form
120,372,753.58/166,165,250.52 = 81,267,498.65/x - Step 3: Cross multiply
120,372,753.58x = 166,165,250.52 × 81,267,498.65 - Step 4: Simplify right side
120,372,753.58x = 13,503,834,272,311,014 - Step 5: Solve for x
x = 13,503,834,272,311,014/120,372,753.58 - Step 6: Final answer
x = 112,183,478.99
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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.