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Finding the Fourth Proportional to 105,058.71, 157,394.07 and 81,281.97

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Solution

The fourth proportional to 105,058.71, 157,394.07 and 81,281.97 is: 121,772.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,058.71 : 157,394.07 = 81,281.97 : x
  2. Step 2: Convert to fraction form
    105,058.71/157,394.07 = 81,281.97/x
  3. Step 3: Cross multiply
    105,058.71x = 157,394.07 × 81,281.97
  4. Step 4: Simplify right side
    105,058.71x = 12,793,300,075.92
  5. Step 5: Solve for x
    x = 12,793,300,075.92/105,058.71
  6. Step 6: Final answer
    x = 121,772.86

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