Home / 90,099.36-135,147.22-26,919.68

Finding the Fourth Proportional to 90,099.36, 135,147.22 and 26,919.68

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Solution

The fourth proportional to 90,099.36, 135,147.22 and 26,919.68 is: 40,378.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,099.36 : 135,147.22 = 26,919.68 : x
  2. Step 2: Convert to fraction form
    90,099.36/135,147.22 = 26,919.68/x
  3. Step 3: Cross multiply
    90,099.36x = 135,147.22 × 26,919.68
  4. Step 4: Simplify right side
    90,099.36x = 3,638,119,172.25
  5. Step 5: Solve for x
    x = 3,638,119,172.25/90,099.36
  6. Step 6: Final answer
    x = 40,378.97

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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.