Finding the Fourth Proportional to 129,660.13, 178,930.83 and 70,044.13
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Solution
The fourth proportional to 129,660.13, 178,930.83 and 70,044.13 is: 96,660.82
Step by Step Solution
- Step 1: Write the proportion equation
129,660.13 : 178,930.83 = 70,044.13 : x - Step 2: Convert to fraction form
129,660.13/178,930.83 = 70,044.13/x - Step 3: Cross multiply
129,660.13x = 178,930.83 × 70,044.13 - Step 4: Simplify right side
129,660.13x = 12,533,054,317.53 - Step 5: Solve for x
x = 12,533,054,317.53/129,660.13 - Step 6: Final answer
x = 96,660.82
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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.