Finding the Fourth Proportional to 100,102,630.10, 149,860,012.35 and 74,656,447.70
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Solution
The fourth proportional to 100,102,630.10, 149,860,012.35 and 74,656,447.70 is: 111,765,456.74
Step by Step Solution
- Step 1: Write the proportion equation
100,102,630.10 : 149,860,012.35 = 74,656,447.70 : x - Step 2: Convert to fraction form
100,102,630.10/149,860,012.35 = 74,656,447.70/x - Step 3: Cross multiply
100,102,630.10x = 149,860,012.35 × 74,656,447.70 - Step 4: Simplify right side
100,102,630.10x = 11,188,016,174,329,130 - Step 5: Solve for x
x = 11,188,016,174,329,130/100,102,630.10 - Step 6: Final answer
x = 111,765,456.74
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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.