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Finding the Fourth Proportional to 125,076.44, 172,603.78 and 68,487.82

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Solution

The fourth proportional to 125,076.44, 172,603.78 and 68,487.82 is: 94,512.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,076.44 : 172,603.78 = 68,487.82 : x
  2. Step 2: Convert to fraction form
    125,076.44/172,603.78 = 68,487.82/x
  3. Step 3: Cross multiply
    125,076.44x = 172,603.78 × 68,487.82
  4. Step 4: Simplify right side
    125,076.44x = 11,821,256,013.23
  5. Step 5: Solve for x
    x = 11,821,256,013.23/125,076.44
  6. Step 6: Final answer
    x = 94,512.25

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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.