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Finding the Fourth Proportional to 91,983.70, 137,975.55 and 84,985.30

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Solution

The fourth proportional to 91,983.70, 137,975.55 and 84,985.30 is: 127,477.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,983.70 : 137,975.55 = 84,985.30 : x
  2. Step 2: Convert to fraction form
    91,983.70/137,975.55 = 84,985.30/x
  3. Step 3: Cross multiply
    91,983.70x = 137,975.55 × 84,985.30
  4. Step 4: Simplify right side
    91,983.70x = 11,725,893,509.42
  5. Step 5: Solve for x
    x = 11,725,893,509.42/91,983.70
  6. Step 6: Final answer
    x = 127,477.95

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