Finding the Fourth Proportional to 126,821.50, 189,930.29 and 73,400.99
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Solution
The fourth proportional to 126,821.50, 189,930.29 and 73,400.99 is: 109,926.71
Step by Step Solution
- Step 1: Write the proportion equation
126,821.50 : 189,930.29 = 73,400.99 : x - Step 2: Convert to fraction form
126,821.50/189,930.29 = 73,400.99/x - Step 3: Cross multiply
126,821.50x = 189,930.29 × 73,400.99 - Step 4: Simplify right side
126,821.50x = 13,941,070,000.33 - Step 5: Solve for x
x = 13,941,070,000.33/126,821.50 - Step 6: Final answer
x = 109,926.71
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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.