Finding the Fourth Proportional to 129,924.36, 179,325.36 and 76,211.64
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Solution
The fourth proportional to 129,924.36, 179,325.36 and 76,211.64 is: 105,189.51
Step by Step Solution
- Step 1: Write the proportion equation
129,924.36 : 179,325.36 = 76,211.64 : x - Step 2: Convert to fraction form
129,924.36/179,325.36 = 76,211.64/x - Step 3: Cross multiply
129,924.36x = 179,325.36 × 76,211.64 - Step 4: Simplify right side
129,924.36x = 13,666,679,779.19 - Step 5: Solve for x
x = 13,666,679,779.19/129,924.36 - Step 6: Final answer
x = 105,189.51
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.