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Finding the Fourth Proportional to 125,745.16, 188,630.05 and 45,804.85

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Solution

The fourth proportional to 125,745.16, 188,630.05 and 45,804.85 is: 68,711.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,745.16 : 188,630.05 = 45,804.85 : x
  2. Step 2: Convert to fraction form
    125,745.16/188,630.05 = 45,804.85/x
  3. Step 3: Cross multiply
    125,745.16x = 188,630.05 × 45,804.85
  4. Step 4: Simplify right side
    125,745.16x = 8,640,171,145.74
  5. Step 5: Solve for x
    x = 8,640,171,145.74/125,745.16
  6. Step 6: Final answer
    x = 68,711.76

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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.