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Finding the Fourth Proportional to 162,006.40, 243,009.60 and 128,545.30

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Solution

The fourth proportional to 162,006.40, 243,009.60 and 128,545.30 is: 192,817.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,006.40 : 243,009.60 = 128,545.30 : x
  2. Step 2: Convert to fraction form
    162,006.40/243,009.60 = 128,545.30/x
  3. Step 3: Cross multiply
    162,006.40x = 243,009.60 × 128,545.30
  4. Step 4: Simplify right side
    162,006.40x = 31,237,741,934.88
  5. Step 5: Solve for x
    x = 31,237,741,934.88/162,006.40
  6. Step 6: Final answer
    x = 192,817.95

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