Home / 90,639.18-125,031.68-84,224.56

Finding the Fourth Proportional to 90,639.18, 125,031.68 and 84,224.56

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Solution

The fourth proportional to 90,639.18, 125,031.68 and 84,224.56 is: 116,183.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,639.18 : 125,031.68 = 84,224.56 : x
  2. Step 2: Convert to fraction form
    90,639.18/125,031.68 = 84,224.56/x
  3. Step 3: Cross multiply
    90,639.18x = 125,031.68 × 84,224.56
  4. Step 4: Simplify right side
    90,639.18x = 10,530,738,234.06
  5. Step 5: Solve for x
    x = 10,530,738,234.06/90,639.18
  6. Step 6: Final answer
    x = 116,183.07

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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.