Home / 142,103.20-213,154.82-72,002.56

Finding the Fourth Proportional to 142,103.20, 213,154.82 and 72,002.56

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Solution

The fourth proportional to 142,103.20, 213,154.82 and 72,002.56 is: 108,003.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,103.20 : 213,154.82 = 72,002.56 : x
  2. Step 2: Convert to fraction form
    142,103.20/213,154.82 = 72,002.56/x
  3. Step 3: Cross multiply
    142,103.20x = 213,154.82 × 72,002.56
  4. Step 4: Simplify right side
    142,103.20x = 15,347,692,716.34
  5. Step 5: Solve for x
    x = 15,347,692,716.34/142,103.20
  6. Step 6: Final answer
    x = 108,003.85

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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.