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Finding the Fourth Proportional to 154,326.40, 212,969.28 and 87,260.80

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Solution

The fourth proportional to 154,326.40, 212,969.28 and 87,260.80 is: 120,419.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,326.40 : 212,969.28 = 87,260.80 : x
  2. Step 2: Convert to fraction form
    154,326.40/212,969.28 = 87,260.80/x
  3. Step 3: Cross multiply
    154,326.40x = 212,969.28 × 87,260.80
  4. Step 4: Simplify right side
    154,326.40x = 18,583,869,748.22
  5. Step 5: Solve for x
    x = 18,583,869,748.22/154,326.40
  6. Step 6: Final answer
    x = 120,419.25

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