Home / 135,919.92-187,563-75,494.40

Finding the Fourth Proportional to 135,919.92, 187,563 and 75,494.40

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Solution

The fourth proportional to 135,919.92, 187,563 and 75,494.40 is: 104,178.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,919.92 : 187,563 = 75,494.40 : x
  2. Step 2: Convert to fraction form
    135,919.92/187,563 = 75,494.40/x
  3. Step 3: Cross multiply
    135,919.92x = 187,563 × 75,494.40
  4. Step 4: Simplify right side
    135,919.92x = 14,159,956,147.20
  5. Step 5: Solve for x
    x = 14,159,956,147.20/135,919.92
  6. Step 6: Final answer
    x = 104,178.67

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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.