Home / 109,622.60-164,433.90-87,315.20

Finding the Fourth Proportional to 109,622.60, 164,433.90 and 87,315.20

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Solution

The fourth proportional to 109,622.60, 164,433.90 and 87,315.20 is: 130,972.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,622.60 : 164,433.90 = 87,315.20 : x
  2. Step 2: Convert to fraction form
    109,622.60/164,433.90 = 87,315.20/x
  3. Step 3: Cross multiply
    109,622.60x = 164,433.90 × 87,315.20
  4. Step 4: Simplify right side
    109,622.60x = 14,357,578,865.28
  5. Step 5: Solve for x
    x = 14,357,578,865.28/109,622.60
  6. Step 6: Final answer
    x = 130,972.80

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