Home / 74,195.21-111,280.58-20,890.88

Finding the Fourth Proportional to 74,195.21, 111,280.58 and 20,890.88

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Solution

The fourth proportional to 74,195.21, 111,280.58 and 20,890.88 is: 31,332.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,195.21 : 111,280.58 = 20,890.88 : x
  2. Step 2: Convert to fraction form
    74,195.21/111,280.58 = 20,890.88/x
  3. Step 3: Cross multiply
    74,195.21x = 111,280.58 × 20,890.88
  4. Step 4: Simplify right side
    74,195.21x = 2,324,749,195.41
  5. Step 5: Solve for x
    x = 2,324,749,195.41/74,195.21
  6. Step 6: Final answer
    x = 31,332.88

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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.