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Finding the Fourth Proportional to 133,089.64, 183,619.58 and 87,790.12

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Solution

The fourth proportional to 133,089.64, 183,619.58 and 87,790.12 is: 121,121.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,089.64 : 183,619.58 = 87,790.12 : x
  2. Step 2: Convert to fraction form
    133,089.64/183,619.58 = 87,790.12/x
  3. Step 3: Cross multiply
    133,089.64x = 183,619.58 × 87,790.12
  4. Step 4: Simplify right side
    133,089.64x = 16,119,984,962.55
  5. Step 5: Solve for x
    x = 16,119,984,962.55/133,089.64
  6. Step 6: Final answer
    x = 121,121.26

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