Finding the Fourth Proportional to 129,774.24, 194,408.88 and 85,265.76
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Solution
The fourth proportional to 129,774.24, 194,408.88 and 85,265.76 is: 127,732.75
Step by Step Solution
- Step 1: Write the proportion equation
129,774.24 : 194,408.88 = 85,265.76 : x - Step 2: Convert to fraction form
129,774.24/194,408.88 = 85,265.76/x - Step 3: Cross multiply
129,774.24x = 194,408.88 × 85,265.76 - Step 4: Simplify right side
129,774.24x = 16,576,420,903.95 - Step 5: Solve for x
x = 16,576,420,903.95/129,774.24 - Step 6: Final answer
x = 127,732.75
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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.