Finding the Fourth Proportional to 142,299.99, 196,357.27 and 78,633.99
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Solution
The fourth proportional to 142,299.99, 196,357.27 and 78,633.99 is: 108,505.67
Step by Step Solution
- Step 1: Write the proportion equation
142,299.99 : 196,357.27 = 78,633.99 : x - Step 2: Convert to fraction form
142,299.99/196,357.27 = 78,633.99/x - Step 3: Cross multiply
142,299.99x = 196,357.27 × 78,633.99 - Step 4: Simplify right side
142,299.99x = 15,440,355,605.61 - Step 5: Solve for x
x = 15,440,355,605.61/142,299.99 - Step 6: Final answer
x = 108,505.67
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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.