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Finding the Fourth Proportional to 139,221.80, 208,703.10 and 97,101.80

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Solution

The fourth proportional to 139,221.80, 208,703.10 and 97,101.80 is: 145,562.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,221.80 : 208,703.10 = 97,101.80 : x
  2. Step 2: Convert to fraction form
    139,221.80/208,703.10 = 97,101.80/x
  3. Step 3: Cross multiply
    139,221.80x = 208,703.10 × 97,101.80
  4. Step 4: Simplify right side
    139,221.80x = 20,265,446,675.58
  5. Step 5: Solve for x
    x = 20,265,446,675.58/139,221.80
  6. Step 6: Final answer
    x = 145,562.31

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