Finding the Fourth Proportional to 156,981,190.14, 216,634,045.32 and 87,383,012.58
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Solution
The fourth proportional to 156,981,190.14, 216,634,045.32 and 87,383,012.58 is: 120,588,558.99
Step by Step Solution
- Step 1: Write the proportion equation
156,981,190.14 : 216,634,045.32 = 87,383,012.58 : x - Step 2: Convert to fraction form
156,981,190.14/216,634,045.32 = 87,383,012.58/x - Step 3: Cross multiply
156,981,190.14x = 216,634,045.32 × 87,383,012.58 - Step 4: Simplify right side
156,981,190.14x = 18,930,135,507,453,848 - Step 5: Solve for x
x = 18,930,135,507,453,848/156,981,190.14 - Step 6: Final answer
x = 120,588,558.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.