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Finding the Fourth Proportional to 90,103.42, 134,980.17 and 43,389.10

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Solution

The fourth proportional to 90,103.42, 134,980.17 and 43,389.10 is: 64,999.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,103.42 : 134,980.17 = 43,389.10 : x
  2. Step 2: Convert to fraction form
    90,103.42/134,980.17 = 43,389.10/x
  3. Step 3: Cross multiply
    90,103.42x = 134,980.17 × 43,389.10
  4. Step 4: Simplify right side
    90,103.42x = 5,856,668,094.15
  5. Step 5: Solve for x
    x = 5,856,668,094.15/90,103.42
  6. Step 6: Final answer
    x = 64,999.40

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