Home / 81,404.20-122,106.30-68,282.20

Finding the Fourth Proportional to 81,404.20, 122,106.30 and 68,282.20

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Solution

The fourth proportional to 81,404.20, 122,106.30 and 68,282.20 is: 102,423.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,404.20 : 122,106.30 = 68,282.20 : x
  2. Step 2: Convert to fraction form
    81,404.20/122,106.30 = 68,282.20/x
  3. Step 3: Cross multiply
    81,404.20x = 122,106.30 × 68,282.20
  4. Step 4: Simplify right side
    81,404.20x = 8,337,686,797.86
  5. Step 5: Solve for x
    x = 8,337,686,797.86/81,404.20
  6. Step 6: Final answer
    x = 102,423.30

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1.5x scale

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.