Home / 135,880.31-187,532.12-82,165.71

Finding the Fourth Proportional to 135,880.31, 187,532.12 and 82,165.71

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Solution

The fourth proportional to 135,880.31, 187,532.12 and 82,165.71 is: 113,399.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,880.31 : 187,532.12 = 82,165.71 : x
  2. Step 2: Convert to fraction form
    135,880.31/187,532.12 = 82,165.71/x
  3. Step 3: Cross multiply
    135,880.31x = 187,532.12 × 82,165.71
  4. Step 4: Simplify right side
    135,880.31x = 15,408,709,376.78
  5. Step 5: Solve for x
    x = 15,408,709,376.78/135,880.31
  6. Step 6: Final answer
    x = 113,399.14

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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.