Home / 129,747.06-178,950.20-81,982.98

Finding the Fourth Proportional to 129,747.06, 178,950.20 and 81,982.98

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Solution

The fourth proportional to 129,747.06, 178,950.20 and 81,982.98 is: 113,072.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,747.06 : 178,950.20 = 81,982.98 : x
  2. Step 2: Convert to fraction form
    129,747.06/178,950.20 = 81,982.98/x
  3. Step 3: Cross multiply
    129,747.06x = 178,950.20 × 81,982.98
  4. Step 4: Simplify right side
    129,747.06x = 14,670,870,257.68
  5. Step 5: Solve for x
    x = 14,670,870,257.68/129,747.06
  6. Step 6: Final answer
    x = 113,072.85

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1.5x scale

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.