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Finding the Fourth Proportional to 99,830.20, 149,745.30 and 47,342.20

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Solution

The fourth proportional to 99,830.20, 149,745.30 and 47,342.20 is: 71,013.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,830.20 : 149,745.30 = 47,342.20 : x
  2. Step 2: Convert to fraction form
    99,830.20/149,745.30 = 47,342.20/x
  3. Step 3: Cross multiply
    99,830.20x = 149,745.30 × 47,342.20
  4. Step 4: Simplify right side
    99,830.20x = 7,089,271,941.66
  5. Step 5: Solve for x
    x = 7,089,271,941.66/99,830.20
  6. Step 6: Final answer
    x = 71,013.30

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