Home / 148,021.20-221,983.20-54,514.80

Finding the Fourth Proportional to 148,021.20, 221,983.20 and 54,514.80

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Solution

The fourth proportional to 148,021.20, 221,983.20 and 54,514.80 is: 81,754.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,021.20 : 221,983.20 = 54,514.80 : x
  2. Step 2: Convert to fraction form
    148,021.20/221,983.20 = 54,514.80/x
  3. Step 3: Cross multiply
    148,021.20x = 221,983.20 × 54,514.80
  4. Step 4: Simplify right side
    148,021.20x = 12,101,369,751.36
  5. Step 5: Solve for x
    x = 12,101,369,751.36/148,021.20
  6. Step 6: Final answer
    x = 81,754.30

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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.