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Finding the Fourth Proportional to 129,612.12, 178,864.74 and 69,996.12

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Solution

The fourth proportional to 129,612.12, 178,864.74 and 69,996.12 is: 96,594.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,612.12 : 178,864.74 = 69,996.12 : x
  2. Step 2: Convert to fraction form
    129,612.12/178,864.74 = 69,996.12/x
  3. Step 3: Cross multiply
    129,612.12x = 178,864.74 × 69,996.12
  4. Step 4: Simplify right side
    129,612.12x = 12,519,837,804.81
  5. Step 5: Solve for x
    x = 12,519,837,804.81/129,612.12
  6. Step 6: Final answer
    x = 96,594.65

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