Home / 125,433.90-188,183.64-72,792.78

Finding the Fourth Proportional to 125,433.90, 188,183.64 and 72,792.78

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Solution

The fourth proportional to 125,433.90, 188,183.64 and 72,792.78 is: 109,208.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,433.90 : 188,183.64 = 72,792.78 : x
  2. Step 2: Convert to fraction form
    125,433.90/188,183.64 = 72,792.78/x
  3. Step 3: Cross multiply
    125,433.90x = 188,183.64 × 72,792.78
  4. Step 4: Simplify right side
    125,433.90x = 13,698,410,306.12
  5. Step 5: Solve for x
    x = 13,698,410,306.12/125,433.90
  6. Step 6: Final answer
    x = 109,208.20

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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.