Home / 454,682.20-682,023.30-139,139.80

Finding the Fourth Proportional to 454,682.20, 682,023.30 and 139,139.80

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Solution

The fourth proportional to 454,682.20, 682,023.30 and 139,139.80 is: 208,709.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,682.20 : 682,023.30 = 139,139.80 : x
  2. Step 2: Convert to fraction form
    454,682.20/682,023.30 = 139,139.80/x
  3. Step 3: Cross multiply
    454,682.20x = 682,023.30 × 139,139.80
  4. Step 4: Simplify right side
    454,682.20x = 94,896,585,557.34
  5. Step 5: Solve for x
    x = 94,896,585,557.34/454,682.20
  6. Step 6: Final answer
    x = 208,709.70

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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.