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Finding the Fourth Proportional to 125,627.60, 188,441.40 and 75,861.20

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Solution

The fourth proportional to 125,627.60, 188,441.40 and 75,861.20 is: 113,791.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,627.60 : 188,441.40 = 75,861.20 : x
  2. Step 2: Convert to fraction form
    125,627.60/188,441.40 = 75,861.20/x
  3. Step 3: Cross multiply
    125,627.60x = 188,441.40 × 75,861.20
  4. Step 4: Simplify right side
    125,627.60x = 14,295,390,733.68
  5. Step 5: Solve for x
    x = 14,295,390,733.68/125,627.60
  6. Step 6: Final answer
    x = 113,791.80

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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.