Home / 142,321.52-213,297.05-57,982.90

Finding the Fourth Proportional to 142,321.52, 213,297.05 and 57,982.90

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Solution

The fourth proportional to 142,321.52, 213,297.05 and 57,982.90 is: 86,898.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,321.52 : 213,297.05 = 57,982.90 : x
  2. Step 2: Convert to fraction form
    142,321.52/213,297.05 = 57,982.90/x
  3. Step 3: Cross multiply
    142,321.52x = 213,297.05 × 57,982.90
  4. Step 4: Simplify right side
    142,321.52x = 12,367,581,520.45
  5. Step 5: Solve for x
    x = 12,367,581,520.45/142,321.52
  6. Step 6: Final answer
    x = 86,898.89

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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.