Finding the Fourth Proportional to 127,731,299.20, 191,596,948.80 and 120,173,027.20
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Solution
The fourth proportional to 127,731,299.20, 191,596,948.80 and 120,173,027.20 is: 180,259,540.80
Step by Step Solution
- Step 1: Write the proportion equation
127,731,299.20 : 191,596,948.80 = 120,173,027.20 : x - Step 2: Convert to fraction form
127,731,299.20/191,596,948.80 = 120,173,027.20/x - Step 3: Cross multiply
127,731,299.20x = 191,596,948.80 × 120,173,027.20 - Step 4: Simplify right side
127,731,299.20x = 23,024,785,339,579,408 - Step 5: Solve for x
x = 23,024,785,339,579,408/127,731,299.20 - Step 6: Final answer
x = 180,259,540.80
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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.