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Finding the Fourth Proportional to 123,792.45, 185,658.75 and 57,168.51

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Solution

The fourth proportional to 123,792.45, 185,658.75 and 57,168.51 is: 85,738.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,792.45 : 185,658.75 = 57,168.51 : x
  2. Step 2: Convert to fraction form
    123,792.45/185,658.75 = 57,168.51/x
  3. Step 3: Cross multiply
    123,792.45x = 185,658.75 × 57,168.51
  4. Step 4: Simplify right side
    123,792.45x = 10,613,834,105.96
  5. Step 5: Solve for x
    x = 10,613,834,105.96/123,792.45
  6. Step 6: Final answer
    x = 85,738.95

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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.