Finding the Fourth Proportional to 129,961.53, 195,044.36 and 66,779.10
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Solution
The fourth proportional to 129,961.53, 195,044.36 and 66,779.10 is: 100,221.09
Step by Step Solution
- Step 1: Write the proportion equation
129,961.53 : 195,044.36 = 66,779.10 : x - Step 2: Convert to fraction form
129,961.53/195,044.36 = 66,779.10/x - Step 3: Cross multiply
129,961.53x = 195,044.36 × 66,779.10 - Step 4: Simplify right side
129,961.53x = 13,024,886,820.88 - Step 5: Solve for x
x = 13,024,886,820.88/129,961.53 - Step 6: Final answer
x = 100,221.09
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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.