Home / 135,628.72-187,255.49-87,252.28

Finding the Fourth Proportional to 135,628.72, 187,255.49 and 87,252.28

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Solution

The fourth proportional to 135,628.72, 187,255.49 and 87,252.28 is: 120,464.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,628.72 : 187,255.49 = 87,252.28 : x
  2. Step 2: Convert to fraction form
    135,628.72/187,255.49 = 87,252.28/x
  3. Step 3: Cross multiply
    135,628.72x = 187,255.49 × 87,252.28
  4. Step 4: Simplify right side
    135,628.72x = 16,338,468,445.02
  5. Step 5: Solve for x
    x = 16,338,468,445.02/135,628.72
  6. Step 6: Final answer
    x = 120,464.67

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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.