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Finding the Fourth Proportional to 81,468.20, 122,202.30 and 75,563.30

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Solution

The fourth proportional to 81,468.20, 122,202.30 and 75,563.30 is: 113,344.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,468.20 : 122,202.30 = 75,563.30 : x
  2. Step 2: Convert to fraction form
    81,468.20/122,202.30 = 75,563.30/x
  3. Step 3: Cross multiply
    81,468.20x = 122,202.30 × 75,563.30
  4. Step 4: Simplify right side
    81,468.20x = 9,234,009,055.59
  5. Step 5: Solve for x
    x = 9,234,009,055.59/81,468.20
  6. Step 6: Final answer
    x = 113,344.95

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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.