Home / 128,546.20-192,819.30-127,671.40

Finding the Fourth Proportional to 128,546.20, 192,819.30 and 127,671.40

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Solution

The fourth proportional to 128,546.20, 192,819.30 and 127,671.40 is: 191,507.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,546.20 : 192,819.30 = 127,671.40 : x
  2. Step 2: Convert to fraction form
    128,546.20/192,819.30 = 127,671.40/x
  3. Step 3: Cross multiply
    128,546.20x = 192,819.30 × 127,671.40
  4. Step 4: Simplify right side
    128,546.20x = 24,617,509,978.02
  5. Step 5: Solve for x
    x = 24,617,509,978.02/128,546.20
  6. Step 6: Final answer
    x = 191,507.10

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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.