Finding the Fourth Proportional to 100,102,620.60, 149,859,998.10 and 74,656,438.20
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Solution
The fourth proportional to 100,102,620.60, 149,859,998.10 and 74,656,438.20 is: 111,765,442.50
Step by Step Solution
- Step 1: Write the proportion equation
100,102,620.60 : 149,859,998.10 = 74,656,438.20 : x - Step 2: Convert to fraction form
100,102,620.60/149,859,998.10 = 74,656,438.20/x - Step 3: Cross multiply
100,102,620.60x = 149,859,998.10 × 74,656,438.20 - Step 4: Simplify right side
100,102,620.60x = 11,188,013,686,804,768 - Step 5: Solve for x
x = 11,188,013,686,804,768/100,102,620.60 - Step 6: Final answer
x = 111,765,442.50
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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.