Finding the Fourth Proportional to 168,434,999.70, 252,652,499.55 and 143,776,137.30
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Solution
The fourth proportional to 168,434,999.70, 252,652,499.55 and 143,776,137.30 is: 215,664,205.95
Step by Step Solution
- Step 1: Write the proportion equation
168,434,999.70 : 252,652,499.55 = 143,776,137.30 : x - Step 2: Convert to fraction form
168,434,999.70/252,652,499.55 = 143,776,137.30/x - Step 3: Cross multiply
168,434,999.70x = 252,652,499.55 × 143,776,137.30 - Step 4: Simplify right side
168,434,999.70x = 36,325,400,464,488,992 - Step 5: Solve for x
x = 36,325,400,464,488,992/168,434,999.70 - Step 6: Final answer
x = 215,664,205.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.