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Finding the Fourth Proportional to 88,819.80, 133,035.30 and 77,155.80

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Solution

The fourth proportional to 88,819.80, 133,035.30 and 77,155.80 is: 115,564.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,819.80 : 133,035.30 = 77,155.80 : x
  2. Step 2: Convert to fraction form
    88,819.80/133,035.30 = 77,155.80/x
  3. Step 3: Cross multiply
    88,819.80x = 133,035.30 × 77,155.80
  4. Step 4: Simplify right side
    88,819.80x = 10,264,444,999.74
  5. Step 5: Solve for x
    x = 10,264,444,999.74/88,819.80
  6. Step 6: Final answer
    x = 115,564.83

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