Finding the Fourth Proportional to 99,659,819.70, 149,489,729.55 and 90,093,881.70
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Solution
The fourth proportional to 99,659,819.70, 149,489,729.55 and 90,093,881.70 is: 135,140,822.55
Step by Step Solution
- Step 1: Write the proportion equation
99,659,819.70 : 149,489,729.55 = 90,093,881.70 : x - Step 2: Convert to fraction form
99,659,819.70/149,489,729.55 = 90,093,881.70/x - Step 3: Cross multiply
99,659,819.70x = 149,489,729.55 × 90,093,881.70 - Step 4: Simplify right side
99,659,819.70x = 13,468,110,009,442,696 - Step 5: Solve for x
x = 13,468,110,009,442,696/99,659,819.70 - Step 6: Final answer
x = 135,140,822.55
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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.