Home / 129,821.40-194,732.10-73,834.20

Finding the Fourth Proportional to 129,821.40, 194,732.10 and 73,834.20

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Solution

The fourth proportional to 129,821.40, 194,732.10 and 73,834.20 is: 110,751.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,821.40 : 194,732.10 = 73,834.20 : x
  2. Step 2: Convert to fraction form
    129,821.40/194,732.10 = 73,834.20/x
  3. Step 3: Cross multiply
    129,821.40x = 194,732.10 × 73,834.20
  4. Step 4: Simplify right side
    129,821.40x = 14,377,888,817.82
  5. Step 5: Solve for x
    x = 14,377,888,817.82/129,821.40
  6. Step 6: Final answer
    x = 110,751.30

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1.5x scale

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.