Home / 135,769.32-187,383.78-76,172.52

Finding the Fourth Proportional to 135,769.32, 187,383.78 and 76,172.52

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Solution

The fourth proportional to 135,769.32, 187,383.78 and 76,172.52 is: 105,130.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,769.32 : 187,383.78 = 76,172.52 : x
  2. Step 2: Convert to fraction form
    135,769.32/187,383.78 = 76,172.52/x
  3. Step 3: Cross multiply
    135,769.32x = 187,383.78 × 76,172.52
  4. Step 4: Simplify right side
    135,769.32x = 14,273,494,729.73
  5. Step 5: Solve for x
    x = 14,273,494,729.73/135,769.32
  6. Step 6: Final answer
    x = 105,130.49

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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.