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Finding the Fourth Proportional to 139,978,859.60, 209,968,289.40 and 111,068,469.20

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Solution

The fourth proportional to 139,978,859.60, 209,968,289.40 and 111,068,469.20 is: 166,602,703.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,978,859.60 : 209,968,289.40 = 111,068,469.20 : x
  2. Step 2: Convert to fraction form
    139,978,859.60/209,968,289.40 = 111,068,469.20/x
  3. Step 3: Cross multiply
    139,978,859.60x = 209,968,289.40 × 111,068,469.20
  4. Step 4: Simplify right side
    139,978,859.60x = 23,320,856,484,200,588
  5. Step 5: Solve for x
    x = 23,320,856,484,200,588/139,978,859.60
  6. Step 6: Final answer
    x = 166,602,703.80

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Why These Related Problems?

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