Home / 128,660.23-192,997.90-49,774.87

Finding the Fourth Proportional to 128,660.23, 192,997.90 and 49,774.87

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Solution

The fourth proportional to 128,660.23, 192,997.90 and 49,774.87 is: 74,665.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,660.23 : 192,997.90 = 49,774.87 : x
  2. Step 2: Convert to fraction form
    128,660.23/192,997.90 = 49,774.87/x
  3. Step 3: Cross multiply
    128,660.23x = 192,997.90 × 49,774.87
  4. Step 4: Simplify right side
    128,660.23x = 9,606,444,417.78
  5. Step 5: Solve for x
    x = 9,606,444,417.78/128,660.23
  6. Step 6: Final answer
    x = 74,665.22

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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.