Home / 142,139.20-213,727.20-119,329.60

Finding the Fourth Proportional to 142,139.20, 213,727.20 and 119,329.60

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Solution

The fourth proportional to 142,139.20, 213,727.20 and 119,329.60 is: 179,429.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,139.20 : 213,727.20 = 119,329.60 : x
  2. Step 2: Convert to fraction form
    142,139.20/213,727.20 = 119,329.60/x
  3. Step 3: Cross multiply
    142,139.20x = 213,727.20 × 119,329.60
  4. Step 4: Simplify right side
    142,139.20x = 25,503,981,285.12
  5. Step 5: Solve for x
    x = 25,503,981,285.12/142,139.20
  6. Step 6: Final answer
    x = 179,429.61

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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.