Home / 128,289.44-176,924.03-82,919.72

Finding the Fourth Proportional to 128,289.44, 176,924.03 and 82,919.72

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Solution

The fourth proportional to 128,289.44, 176,924.03 and 82,919.72 is: 114,354.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,289.44 : 176,924.03 = 82,919.72 : x
  2. Step 2: Convert to fraction form
    128,289.44/176,924.03 = 82,919.72/x
  3. Step 3: Cross multiply
    128,289.44x = 176,924.03 × 82,919.72
  4. Step 4: Simplify right side
    128,289.44x = 14,670,489,729.65
  5. Step 5: Solve for x
    x = 14,670,489,729.65/128,289.44
  6. Step 6: Final answer
    x = 114,354.62

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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.