Finding the Fourth Proportional to 126,689.44, 190,089.29 and 79,412.88
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Solution
The fourth proportional to 126,689.44, 190,089.29 and 79,412.88 is: 119,153.88
Step by Step Solution
- Step 1: Write the proportion equation
126,689.44 : 190,089.29 = 79,412.88 : x - Step 2: Convert to fraction form
126,689.44/190,089.29 = 79,412.88/x - Step 3: Cross multiply
126,689.44x = 190,089.29 × 79,412.88 - Step 4: Simplify right side
126,689.44x = 15,095,537,976.06 - Step 5: Solve for x
x = 15,095,537,976.06/126,689.44 - Step 6: Final answer
x = 119,153.88
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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.