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Finding the Fourth Proportional to 131,790.32, 181,870.98 and 71,361.71

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Solution

The fourth proportional to 131,790.32, 181,870.98 and 71,361.71 is: 98,479.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,790.32 : 181,870.98 = 71,361.71 : x
  2. Step 2: Convert to fraction form
    131,790.32/181,870.98 = 71,361.71/x
  3. Step 3: Cross multiply
    131,790.32x = 181,870.98 × 71,361.71
  4. Step 4: Simplify right side
    131,790.32x = 12,978,624,132.18
  5. Step 5: Solve for x
    x = 12,978,624,132.18/131,790.32
  6. Step 6: Final answer
    x = 98,479.34

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