Home / 111,238.70-167,246.85-108,905.90

Finding the Fourth Proportional to 111,238.70, 167,246.85 and 108,905.90

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Solution

The fourth proportional to 111,238.70, 167,246.85 and 108,905.90 is: 163,739.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,238.70 : 167,246.85 = 108,905.90 : x
  2. Step 2: Convert to fraction form
    111,238.70/167,246.85 = 108,905.90/x
  3. Step 3: Cross multiply
    111,238.70x = 167,246.85 × 108,905.90
  4. Step 4: Simplify right side
    111,238.70x = 18,214,168,721.42
  5. Step 5: Solve for x
    x = 18,214,168,721.42/111,238.70
  6. Step 6: Final answer
    x = 163,739.50

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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.