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Finding the Fourth Proportional to 455,987.13, 684,015.05 and 136,113.72

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Solution

The fourth proportional to 455,987.13, 684,015.05 and 136,113.72 is: 204,180.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,987.13 : 684,015.05 = 136,113.72 : x
  2. Step 2: Convert to fraction form
    455,987.13/684,015.05 = 136,113.72/x
  3. Step 3: Cross multiply
    455,987.13x = 684,015.05 × 136,113.72
  4. Step 4: Simplify right side
    455,987.13x = 93,103,832,991.49
  5. Step 5: Solve for x
    x = 93,103,832,991.49/455,987.13
  6. Step 6: Final answer
    x = 204,180.84

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