Finding the Fourth Proportional to 129,764.90, 194,647.35 and 74,315.30
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Solution
The fourth proportional to 129,764.90, 194,647.35 and 74,315.30 is: 111,472.95
Step by Step Solution
- Step 1: Write the proportion equation
129,764.90 : 194,647.35 = 74,315.30 : x - Step 2: Convert to fraction form
129,764.90/194,647.35 = 74,315.30/x - Step 3: Cross multiply
129,764.90x = 194,647.35 × 74,315.30 - Step 4: Simplify right side
129,764.90x = 14,465,276,209.46 - Step 5: Solve for x
x = 14,465,276,209.46/129,764.90 - Step 6: Final answer
x = 111,472.95
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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.