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Finding the Fourth Proportional to 128,179.62, 192,102.12 and 92,760.21

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Solution

The fourth proportional to 128,179.62, 192,102.12 and 92,760.21 is: 139,019.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,179.62 : 192,102.12 = 92,760.21 : x
  2. Step 2: Convert to fraction form
    128,179.62/192,102.12 = 92,760.21/x
  3. Step 3: Cross multiply
    128,179.62x = 192,102.12 × 92,760.21
  4. Step 4: Simplify right side
    128,179.62x = 17,819,432,992.65
  5. Step 5: Solve for x
    x = 17,819,432,992.65/128,179.62
  6. Step 6: Final answer
    x = 139,019.24

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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.