Home / 135,934.02-187,550.10-82,180

Finding the Fourth Proportional to 135,934.02, 187,550.10 and 82,180

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Solution

The fourth proportional to 135,934.02, 187,550.10 and 82,180 is: 113,384.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,934.02 : 187,550.10 = 82,180 : x
  2. Step 2: Convert to fraction form
    135,934.02/187,550.10 = 82,180/x
  3. Step 3: Cross multiply
    135,934.02x = 187,550.10 × 82,180
  4. Step 4: Simplify right side
    135,934.02x = 15,412,867,218
  5. Step 5: Solve for x
    x = 15,412,867,218/135,934.02
  6. Step 6: Final answer
    x = 113,384.91

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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.