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Finding the Fourth Proportional to 128,035.20, 192,027.20 and 61,475.20

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Solution

The fourth proportional to 128,035.20, 192,027.20 and 61,475.20 is: 92,200.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,035.20 : 192,027.20 = 61,475.20 : x
  2. Step 2: Convert to fraction form
    128,035.20/192,027.20 = 61,475.20/x
  3. Step 3: Cross multiply
    128,035.20x = 192,027.20 × 61,475.20
  4. Step 4: Simplify right side
    128,035.20x = 11,804,910,525.44
  5. Step 5: Solve for x
    x = 11,804,910,525.44/128,035.20
  6. Step 6: Final answer
    x = 92,200.51

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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.