Home / 128,819.85-192,924.31-102,079.86

Finding the Fourth Proportional to 128,819.85, 192,924.31 and 102,079.86

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Solution

The fourth proportional to 128,819.85, 192,924.31 and 102,079.86 is: 152,877.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,819.85 : 192,924.31 = 102,079.86 : x
  2. Step 2: Convert to fraction form
    128,819.85/192,924.31 = 102,079.86/x
  3. Step 3: Cross multiply
    128,819.85x = 192,924.31 × 102,079.86
  4. Step 4: Simplify right side
    128,819.85x = 19,693,686,555.40
  5. Step 5: Solve for x
    x = 19,693,686,555.40/128,819.85
  6. Step 6: Final answer
    x = 152,877.73

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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.