Home / 90,021.92-124,149.54-74,964.44

Finding the Fourth Proportional to 90,021.92, 124,149.54 and 74,964.44

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Solution

The fourth proportional to 90,021.92, 124,149.54 and 74,964.44 is: 103,383.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,021.92 : 124,149.54 = 74,964.44 : x
  2. Step 2: Convert to fraction form
    90,021.92/124,149.54 = 74,964.44/x
  3. Step 3: Cross multiply
    90,021.92x = 124,149.54 × 74,964.44
  4. Step 4: Simplify right side
    90,021.92x = 9,306,800,742.36
  5. Step 5: Solve for x
    x = 9,306,800,742.36/90,021.92
  6. Step 6: Final answer
    x = 103,383.72

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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.