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Finding the Fourth Proportional to 164,230.20, 246,345.30 and 128,800.80

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Solution

The fourth proportional to 164,230.20, 246,345.30 and 128,800.80 is: 193,201.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,230.20 : 246,345.30 = 128,800.80 : x
  2. Step 2: Convert to fraction form
    164,230.20/246,345.30 = 128,800.80/x
  3. Step 3: Cross multiply
    164,230.20x = 246,345.30 × 128,800.80
  4. Step 4: Simplify right side
    164,230.20x = 31,729,471,716.24
  5. Step 5: Solve for x
    x = 31,729,471,716.24/164,230.20
  6. Step 6: Final answer
    x = 193,201.20

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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.