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Finding the Fourth Proportional to 142,879.60, 214,254.60 and 54,103.60

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Solution

The fourth proportional to 142,879.60, 214,254.60 and 54,103.60 is: 81,130.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,879.60 : 214,254.60 = 54,103.60 : x
  2. Step 2: Convert to fraction form
    142,879.60/214,254.60 = 54,103.60/x
  3. Step 3: Cross multiply
    142,879.60x = 214,254.60 × 54,103.60
  4. Step 4: Simplify right side
    142,879.60x = 11,591,945,176.56
  5. Step 5: Solve for x
    x = 11,591,945,176.56/142,879.60
  6. Step 6: Final answer
    x = 81,130.86

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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.