Home / 142,453.83-196,589.67-78,792.87

Finding the Fourth Proportional to 142,453.83, 196,589.67 and 78,792.87

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Solution

The fourth proportional to 142,453.83, 196,589.67 and 78,792.87 is: 108,736.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,453.83 : 196,589.67 = 78,792.87 : x
  2. Step 2: Convert to fraction form
    142,453.83/196,589.67 = 78,792.87/x
  3. Step 3: Cross multiply
    142,453.83x = 196,589.67 × 78,792.87
  4. Step 4: Simplify right side
    142,453.83x = 15,489,864,311.65
  5. Step 5: Solve for x
    x = 15,489,864,311.65/142,453.83
  6. Step 6: Final answer
    x = 108,736.03

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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.