Finding the Fourth Proportional to 129,186.08, 193,779.20 and 40,447.20
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Solution
The fourth proportional to 129,186.08, 193,779.20 and 40,447.20 is: 60,670.83
Step by Step Solution
- Step 1: Write the proportion equation
129,186.08 : 193,779.20 = 40,447.20 : x - Step 2: Convert to fraction form
129,186.08/193,779.20 = 40,447.20/x - Step 3: Cross multiply
129,186.08x = 193,779.20 × 40,447.20 - Step 4: Simplify right side
129,186.08x = 7,837,826,058.24 - Step 5: Solve for x
x = 7,837,826,058.24/129,186.08 - Step 6: Final answer
x = 60,670.83
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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.