Home / 135,878.81-187,530.05-82,164.20

Finding the Fourth Proportional to 135,878.81, 187,530.05 and 82,164.20

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Solution

The fourth proportional to 135,878.81, 187,530.05 and 82,164.20 is: 113,397.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,878.81 : 187,530.05 = 82,164.20 : x
  2. Step 2: Convert to fraction form
    135,878.81/187,530.05 = 82,164.20/x
  3. Step 3: Cross multiply
    135,878.81x = 187,530.05 × 82,164.20
  4. Step 4: Simplify right side
    135,878.81x = 15,408,256,900.33
  5. Step 5: Solve for x
    x = 15,408,256,900.33/135,878.81
  6. Step 6: Final answer
    x = 113,397.06

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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.