Finding the Fourth Proportional to 235,994.49, 353,779.17 and 86,129.62
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Solution
The fourth proportional to 235,994.49, 353,779.17 and 86,129.62 is: 129,116.85
Step by Step Solution
- Step 1: Write the proportion equation
235,994.49 : 353,779.17 = 86,129.62 : x - Step 2: Convert to fraction form
235,994.49/353,779.17 = 86,129.62/x - Step 3: Cross multiply
235,994.49x = 353,779.17 × 86,129.62 - Step 4: Simplify right side
235,994.49x = 30,470,865,476.02 - Step 5: Solve for x
x = 30,470,865,476.02/235,994.49 - Step 6: Final answer
x = 129,116.85
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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.