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Finding the Fourth Proportional to 210,729.99, 316,029.38 and 70,455.81

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Solution

The fourth proportional to 210,729.99, 316,029.38 and 70,455.81 is: 105,661.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,729.99 : 316,029.38 = 70,455.81 : x
  2. Step 2: Convert to fraction form
    210,729.99/316,029.38 = 70,455.81/x
  3. Step 3: Cross multiply
    210,729.99x = 316,029.38 × 70,455.81
  4. Step 4: Simplify right side
    210,729.99x = 22,266,105,951.70
  5. Step 5: Solve for x
    x = 22,266,105,951.70/210,729.99
  6. Step 6: Final answer
    x = 105,661.78

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