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Finding the Fourth Proportional to 100,978.11, 151,497.93 and 47,711.00

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Solution

The fourth proportional to 100,978.11, 151,497.93 and 47,711.00 is: 71,581.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,978.11 : 151,497.93 = 47,711.00 : x
  2. Step 2: Convert to fraction form
    100,978.11/151,497.93 = 47,711.00/x
  3. Step 3: Cross multiply
    100,978.11x = 151,497.93 × 47,711.00
  4. Step 4: Simplify right side
    100,978.11x = 7,228,116,980.74
  5. Step 5: Solve for x
    x = 7,228,116,980.74/100,978.11
  6. Step 6: Final answer
    x = 71,581.03

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