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Finding the Fourth Proportional to 142,157.34, 213,130.94 and 85,983.90

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Solution

The fourth proportional to 142,157.34, 213,130.94 and 85,983.90 is: 128,912.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,157.34 : 213,130.94 = 85,983.90 : x
  2. Step 2: Convert to fraction form
    142,157.34/213,130.94 = 85,983.90/x
  3. Step 3: Cross multiply
    142,157.34x = 213,130.94 × 85,983.90
  4. Step 4: Simplify right side
    142,157.34x = 18,325,829,431.87
  5. Step 5: Solve for x
    x = 18,325,829,431.87/142,157.34
  6. Step 6: Final answer
    x = 128,912.30

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