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Finding the Fourth Proportional to 109,731,978.20, 164,430,005.70 and 103,685,360.60

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Solution

The fourth proportional to 109,731,978.20, 164,430,005.70 and 103,685,360.60 is: 155,369,334.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,731,978.20 : 164,430,005.70 = 103,685,360.60 : x
  2. Step 2: Convert to fraction form
    109,731,978.20/164,430,005.70 = 103,685,360.60/x
  3. Step 3: Cross multiply
    109,731,978.20x = 164,430,005.70 × 103,685,360.60
  4. Step 4: Simplify right side
    109,731,978.20x = 17,048,984,434,464,554
  5. Step 5: Solve for x
    x = 17,048,984,434,464,554/109,731,978.20
  6. Step 6: Final answer
    x = 155,369,334.57

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