Home / 142,863.20-213,944.88-100,639.52

Finding the Fourth Proportional to 142,863.20, 213,944.88 and 100,639.52

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Solution

The fourth proportional to 142,863.20, 213,944.88 and 100,639.52 is: 150,712.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,863.20 : 213,944.88 = 100,639.52 : x
  2. Step 2: Convert to fraction form
    142,863.20/213,944.88 = 100,639.52/x
  3. Step 3: Cross multiply
    142,863.20x = 213,944.88 × 100,639.52
  4. Step 4: Simplify right side
    142,863.20x = 21,531,310,029.66
  5. Step 5: Solve for x
    x = 21,531,310,029.66/142,863.20
  6. Step 6: Final answer
    x = 150,712.78

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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.