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Finding the Fourth Proportional to 125,745.66, 188,630.81 and 45,805.35

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Solution

The fourth proportional to 125,745.66, 188,630.81 and 45,805.35 is: 68,712.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,745.66 : 188,630.81 = 45,805.35 : x
  2. Step 2: Convert to fraction form
    125,745.66/188,630.81 = 45,805.35/x
  3. Step 3: Cross multiply
    125,745.66x = 188,630.81 × 45,805.35
  4. Step 4: Simplify right side
    125,745.66x = 8,640,300,043.81
  5. Step 5: Solve for x
    x = 8,640,300,043.81/125,745.66
  6. Step 6: Final answer
    x = 68,712.51

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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.