Finding the Fourth Proportional to 129,539.86, 194,316.75 and 40,800.31
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Solution
The fourth proportional to 129,539.86, 194,316.75 and 40,800.31 is: 61,202.66
Step by Step Solution
- Step 1: Write the proportion equation
129,539.86 : 194,316.75 = 40,800.31 : x - Step 2: Convert to fraction form
129,539.86/194,316.75 = 40,800.31/x - Step 3: Cross multiply
129,539.86x = 194,316.75 × 40,800.31 - Step 4: Simplify right side
129,539.86x = 7,928,183,638.19 - Step 5: Solve for x
x = 7,928,183,638.19/129,539.86 - Step 6: Final answer
x = 61,202.66
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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.