Finding the Fourth Proportional to 129,742.68, 179,044.38 and 70,126.68
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Solution
The fourth proportional to 129,742.68, 179,044.38 and 70,126.68 is: 96,774.54
Step by Step Solution
- Step 1: Write the proportion equation
129,742.68 : 179,044.38 = 70,126.68 : x - Step 2: Convert to fraction form
129,742.68/179,044.38 = 70,126.68/x - Step 3: Cross multiply
129,742.68x = 179,044.38 × 70,126.68 - Step 4: Simplify right side
129,742.68x = 12,555,787,942.06 - Step 5: Solve for x
x = 12,555,787,942.06/129,742.68 - Step 6: Final answer
x = 96,774.54
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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.