Home / 129,821.80-194,732.70-73,640.20

Finding the Fourth Proportional to 129,821.80, 194,732.70 and 73,640.20

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Solution

The fourth proportional to 129,821.80, 194,732.70 and 73,640.20 is: 110,460.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,821.80 : 194,732.70 = 73,640.20 : x
  2. Step 2: Convert to fraction form
    129,821.80/194,732.70 = 73,640.20/x
  3. Step 3: Cross multiply
    129,821.80x = 194,732.70 × 73,640.20
  4. Step 4: Simplify right side
    129,821.80x = 14,340,154,974.54
  5. Step 5: Solve for x
    x = 14,340,154,974.54/129,821.80
  6. Step 6: Final answer
    x = 110,460.30

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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.