Finding the Fourth Proportional to 99,647,690.70, 149,471,536.05 and 86,016,229.05
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Solution
The fourth proportional to 99,647,690.70, 149,471,536.05 and 86,016,229.05 is: 129,024,343.58
Step by Step Solution
- Step 1: Write the proportion equation
99,647,690.70 : 149,471,536.05 = 86,016,229.05 : x - Step 2: Convert to fraction form
99,647,690.70/149,471,536.05 = 86,016,229.05/x - Step 3: Cross multiply
99,647,690.70x = 149,471,536.05 × 86,016,229.05 - Step 4: Simplify right side
99,647,690.70x = 12,856,977,881,332,132 - Step 5: Solve for x
x = 12,856,977,881,332,132/99,647,690.70 - Step 6: Final answer
x = 129,024,343.58
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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.