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Finding the Fourth Proportional to 119,963.20, 179,944.80 and 75,445.60

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Solution

The fourth proportional to 119,963.20, 179,944.80 and 75,445.60 is: 113,168.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,963.20 : 179,944.80 = 75,445.60 : x
  2. Step 2: Convert to fraction form
    119,963.20/179,944.80 = 75,445.60/x
  3. Step 3: Cross multiply
    119,963.20x = 179,944.80 × 75,445.60
  4. Step 4: Simplify right side
    119,963.20x = 13,576,043,402.88
  5. Step 5: Solve for x
    x = 13,576,043,402.88/119,963.20
  6. Step 6: Final answer
    x = 113,168.40

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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.