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Finding the Fourth Proportional to 131,397.50, 181,329.36 and 71,781.50

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Solution

The fourth proportional to 131,397.50, 181,329.36 and 71,781.50 is: 99,058.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,397.50 : 181,329.36 = 71,781.50 : x
  2. Step 2: Convert to fraction form
    131,397.50/181,329.36 = 71,781.50/x
  3. Step 3: Cross multiply
    131,397.50x = 181,329.36 × 71,781.50
  4. Step 4: Simplify right side
    131,397.50x = 13,016,093,454.84
  5. Step 5: Solve for x
    x = 13,016,093,454.84/131,397.50
  6. Step 6: Final answer
    x = 99,058.91

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