Home / 142,793.20-213,930.60-87,324.40

Finding the Fourth Proportional to 142,793.20, 213,930.60 and 87,324.40

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Solution

The fourth proportional to 142,793.20, 213,930.60 and 87,324.40 is: 130,828.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,793.20 : 213,930.60 = 87,324.40 : x
  2. Step 2: Convert to fraction form
    142,793.20/213,930.60 = 87,324.40/x
  3. Step 3: Cross multiply
    142,793.20x = 213,930.60 × 87,324.40
  4. Step 4: Simplify right side
    142,793.20x = 18,681,361,286.64
  5. Step 5: Solve for x
    x = 18,681,361,286.64/142,793.20
  6. Step 6: Final answer
    x = 130,828.09

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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.