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Finding the Fourth Proportional to 125,238.78, 172,829.52 and 68,648.94

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Solution

The fourth proportional to 125,238.78, 172,829.52 and 68,648.94 is: 94,735.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,238.78 : 172,829.52 = 68,648.94 : x
  2. Step 2: Convert to fraction form
    125,238.78/172,829.52 = 68,648.94/x
  3. Step 3: Cross multiply
    125,238.78x = 172,829.52 × 68,648.94
  4. Step 4: Simplify right side
    125,238.78x = 11,864,563,348.71
  5. Step 5: Solve for x
    x = 11,864,563,348.71/125,238.78
  6. Step 6: Final answer
    x = 94,735.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.