Home / 135,748.94-187,443.60-84,821

Finding the Fourth Proportional to 135,748.94, 187,443.60 and 84,821

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Solution

The fourth proportional to 135,748.94, 187,443.60 and 84,821 is: 117,121.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,748.94 : 187,443.60 = 84,821 : x
  2. Step 2: Convert to fraction form
    135,748.94/187,443.60 = 84,821/x
  3. Step 3: Cross multiply
    135,748.94x = 187,443.60 × 84,821
  4. Step 4: Simplify right side
    135,748.94x = 15,899,153,595.60
  5. Step 5: Solve for x
    x = 15,899,153,595.60/135,748.94
  6. Step 6: Final answer
    x = 117,121.75

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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.