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Finding the Fourth Proportional to 132,051.20, 198,105.60 and 43,289.60

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Solution

The fourth proportional to 132,051.20, 198,105.60 and 43,289.60 is: 64,943.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,051.20 : 198,105.60 = 43,289.60 : x
  2. Step 2: Convert to fraction form
    132,051.20/198,105.60 = 43,289.60/x
  3. Step 3: Cross multiply
    132,051.20x = 198,105.60 × 43,289.60
  4. Step 4: Simplify right side
    132,051.20x = 8,575,912,181.76
  5. Step 5: Solve for x
    x = 8,575,912,181.76/132,051.20
  6. Step 6: Final answer
    x = 64,943.84

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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.