Finding the Fourth Proportional to 99,776,134.40, 149,664,201.60 and 72,353,778.80
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Solution
The fourth proportional to 99,776,134.40, 149,664,201.60 and 72,353,778.80 is: 108,530,668.20
Step by Step Solution
- Step 1: Write the proportion equation
99,776,134.40 : 149,664,201.60 = 72,353,778.80 : x - Step 2: Convert to fraction form
99,776,134.40/149,664,201.60 = 72,353,778.80/x - Step 3: Cross multiply
99,776,134.40x = 149,664,201.60 × 72,353,778.80 - Step 4: Simplify right side
99,776,134.40x = 10,828,770,536,845,006 - Step 5: Solve for x
x = 10,828,770,536,845,006/99,776,134.40 - Step 6: Final answer
x = 108,530,668.20
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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.