Finding the Fourth Proportional to 129,544.72, 194,317.12 and 100,005.68
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Solution
The fourth proportional to 129,544.72, 194,317.12 and 100,005.68 is: 150,008.55
Step by Step Solution
- Step 1: Write the proportion equation
129,544.72 : 194,317.12 = 100,005.68 : x - Step 2: Convert to fraction form
129,544.72/194,317.12 = 100,005.68/x - Step 3: Cross multiply
129,544.72x = 194,317.12 × 100,005.68 - Step 4: Simplify right side
129,544.72x = 19,432,815,721.24 - Step 5: Solve for x
x = 19,432,815,721.24/129,544.72 - Step 6: Final answer
x = 150,008.55
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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.