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Finding the Fourth Proportional to 125,113.78, 172,650.16 and 74,131.21

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Solution

The fourth proportional to 125,113.78, 172,650.16 and 74,131.21 is: 102,297.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,113.78 : 172,650.16 = 74,131.21 : x
  2. Step 2: Convert to fraction form
    125,113.78/172,650.16 = 74,131.21/x
  3. Step 3: Cross multiply
    125,113.78x = 172,650.16 × 74,131.21
  4. Step 4: Simplify right side
    125,113.78x = 12,798,765,267.49
  5. Step 5: Solve for x
    x = 12,798,765,267.49/125,113.78
  6. Step 6: Final answer
    x = 102,297.01

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