Home / 148,936.20-223,404.30-139,021.80

Finding the Fourth Proportional to 148,936.20, 223,404.30 and 139,021.80

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Solution

The fourth proportional to 148,936.20, 223,404.30 and 139,021.80 is: 208,532.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,936.20 : 223,404.30 = 139,021.80 : x
  2. Step 2: Convert to fraction form
    148,936.20/223,404.30 = 139,021.80/x
  3. Step 3: Cross multiply
    148,936.20x = 223,404.30 × 139,021.80
  4. Step 4: Simplify right side
    148,936.20x = 31,058,067,913.74
  5. Step 5: Solve for x
    x = 31,058,067,913.74/148,936.20
  6. Step 6: Final answer
    x = 208,532.70

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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.