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Finding the Fourth Proportional to 139,978,828.20, 209,968,242.30 and 88,897,506.60

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Solution

The fourth proportional to 139,978,828.20, 209,968,242.30 and 88,897,506.60 is: 133,346,259.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,978,828.20 : 209,968,242.30 = 88,897,506.60 : x
  2. Step 2: Convert to fraction form
    139,978,828.20/209,968,242.30 = 88,897,506.60/x
  3. Step 3: Cross multiply
    139,978,828.20x = 209,968,242.30 × 88,897,506.60
  4. Step 4: Simplify right side
    139,978,828.20x = 18,665,653,205,654,648
  5. Step 5: Solve for x
    x = 18,665,653,205,654,648/139,978,828.20
  6. Step 6: Final answer
    x = 133,346,259.90

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Why These Related Problems?

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