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Finding the Fourth Proportional to 125,785.85, 188,720.28 and 50,865.10

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Solution

The fourth proportional to 125,785.85, 188,720.28 and 50,865.10 is: 76,314.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,785.85 : 188,720.28 = 50,865.10 : x
  2. Step 2: Convert to fraction form
    125,785.85/188,720.28 = 50,865.10/x
  3. Step 3: Cross multiply
    125,785.85x = 188,720.28 × 50,865.10
  4. Step 4: Simplify right side
    125,785.85x = 9,599,275,442.43
  5. Step 5: Solve for x
    x = 9,599,275,442.43/125,785.85
  6. Step 6: Final answer
    x = 76,314.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.