Home / 142,135.56-213,214.68-82,977.21

Finding the Fourth Proportional to 142,135.56, 213,214.68 and 82,977.21

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Solution

The fourth proportional to 142,135.56, 213,214.68 and 82,977.21 is: 124,472.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,135.56 : 213,214.68 = 82,977.21 : x
  2. Step 2: Convert to fraction form
    142,135.56/213,214.68 = 82,977.21/x
  3. Step 3: Cross multiply
    142,135.56x = 213,214.68 × 82,977.21
  4. Step 4: Simplify right side
    142,135.56x = 17,691,959,277.44
  5. Step 5: Solve for x
    x = 17,691,959,277.44/142,135.56
  6. Step 6: Final answer
    x = 124,472.44

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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.