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Finding the Fourth Proportional to 101,511.20, 152,439.60 and 75,245.60

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Solution

The fourth proportional to 101,511.20, 152,439.60 and 75,245.60 is: 112,996.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,511.20 : 152,439.60 = 75,245.60 : x
  2. Step 2: Convert to fraction form
    101,511.20/152,439.60 = 75,245.60/x
  3. Step 3: Cross multiply
    101,511.20x = 152,439.60 × 75,245.60
  4. Step 4: Simplify right side
    101,511.20x = 11,470,409,165.76
  5. Step 5: Solve for x
    x = 11,470,409,165.76/101,511.20
  6. Step 6: Final answer
    x = 112,996.49

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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.