Home / 135,801.28-187,428.30-79,212.67

Finding the Fourth Proportional to 135,801.28, 187,428.30 and 79,212.67

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Solution

The fourth proportional to 135,801.28, 187,428.30 and 79,212.67 is: 109,326.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,801.28 : 187,428.30 = 79,212.67 : x
  2. Step 2: Convert to fraction form
    135,801.28/187,428.30 = 79,212.67/x
  3. Step 3: Cross multiply
    135,801.28x = 187,428.30 × 79,212.67
  4. Step 4: Simplify right side
    135,801.28x = 14,846,696,076.56
  5. Step 5: Solve for x
    x = 14,846,696,076.56/135,801.28
  6. Step 6: Final answer
    x = 109,326.63

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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.