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Finding the Fourth Proportional to 155,412.65, 214,469.12 and 87,429.67

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Solution

The fourth proportional to 155,412.65, 214,469.12 and 87,429.67 is: 120,652.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,412.65 : 214,469.12 = 87,429.67 : x
  2. Step 2: Convert to fraction form
    155,412.65/214,469.12 = 87,429.67/x
  3. Step 3: Cross multiply
    155,412.65x = 214,469.12 × 87,429.67
  4. Step 4: Simplify right side
    155,412.65x = 18,750,964,069.19
  5. Step 5: Solve for x
    x = 18,750,964,069.19/155,412.65
  6. Step 6: Final answer
    x = 120,652.75

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