Home / 90,118.56-135,179.70-27,789

Finding the Fourth Proportional to 90,118.56, 135,179.70 and 27,789

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Solution

The fourth proportional to 90,118.56, 135,179.70 and 27,789 is: 41,684.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,118.56 : 135,179.70 = 27,789 : x
  2. Step 2: Convert to fraction form
    90,118.56/135,179.70 = 27,789/x
  3. Step 3: Cross multiply
    90,118.56x = 135,179.70 × 27,789
  4. Step 4: Simplify right side
    90,118.56x = 3,756,508,683.30
  5. Step 5: Solve for x
    x = 3,756,508,683.30/90,118.56
  6. Step 6: Final answer
    x = 41,684.07

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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.