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Finding the Fourth Proportional to 147,650.20, 220,892.10 and 128,145.40

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Solution

The fourth proportional to 147,650.20, 220,892.10 and 128,145.40 is: 191,711.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,650.20 : 220,892.10 = 128,145.40 : x
  2. Step 2: Convert to fraction form
    147,650.20/220,892.10 = 128,145.40/x
  3. Step 3: Cross multiply
    147,650.20x = 220,892.10 × 128,145.40
  4. Step 4: Simplify right side
    147,650.20x = 28,306,306,511.34
  5. Step 5: Solve for x
    x = 28,306,306,511.34/147,650.20
  6. Step 6: Final answer
    x = 191,711.94

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