Home / 135,880.81-187,532.81-82,166.20

Finding the Fourth Proportional to 135,880.81, 187,532.81 and 82,166.20

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Solution

The fourth proportional to 135,880.81, 187,532.81 and 82,166.20 is: 113,399.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,880.81 : 187,532.81 = 82,166.20 : x
  2. Step 2: Convert to fraction form
    135,880.81/187,532.81 = 82,166.20/x
  3. Step 3: Cross multiply
    135,880.81x = 187,532.81 × 82,166.20
  4. Step 4: Simplify right side
    135,880.81x = 15,408,858,373.02
  5. Step 5: Solve for x
    x = 15,408,858,373.02/135,880.81
  6. Step 6: Final answer
    x = 113,399.81

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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.