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Finding the Fourth Proportional to 102,122.88, 153,203.76 and 31,983.36

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Solution

The fourth proportional to 102,122.88, 153,203.76 and 31,983.36 is: 47,981.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,122.88 : 153,203.76 = 31,983.36 : x
  2. Step 2: Convert to fraction form
    102,122.88/153,203.76 = 31,983.36/x
  3. Step 3: Cross multiply
    102,122.88x = 153,203.76 × 31,983.36
  4. Step 4: Simplify right side
    102,122.88x = 4,899,971,009.43
  5. Step 5: Solve for x
    x = 4,899,971,009.43/102,122.88
  6. Step 6: Final answer
    x = 47,981.13

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