Home / 90,491.32-135,760.04-63,889.13

Finding the Fourth Proportional to 90,491.32, 135,760.04 and 63,889.13

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Solution

The fourth proportional to 90,491.32, 135,760.04 and 63,889.13 is: 95,849.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,491.32 : 135,760.04 = 63,889.13 : x
  2. Step 2: Convert to fraction form
    90,491.32/135,760.04 = 63,889.13/x
  3. Step 3: Cross multiply
    90,491.32x = 135,760.04 × 63,889.13
  4. Step 4: Simplify right side
    90,491.32x = 8,673,591,103.90
  5. Step 5: Solve for x
    x = 8,673,591,103.90/90,491.32
  6. Step 6: Final answer
    x = 95,849.98

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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.