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Finding the Fourth Proportional to 210,996.48, 316,392.60 and 77,939.40

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Solution

The fourth proportional to 210,996.48, 316,392.60 and 77,939.40 is: 116,871.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,996.48 : 316,392.60 = 77,939.40 : x
  2. Step 2: Convert to fraction form
    210,996.48/316,392.60 = 77,939.40/x
  3. Step 3: Cross multiply
    210,996.48x = 316,392.60 × 77,939.40
  4. Step 4: Simplify right side
    210,996.48x = 24,659,449,408.44
  5. Step 5: Solve for x
    x = 24,659,449,408.44/210,996.48
  6. Step 6: Final answer
    x = 116,871.38

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