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Finding the Fourth Proportional to 230,978, 318,749.80 and 124,994

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Solution

The fourth proportional to 230,978, 318,749.80 and 124,994 is: 172,491.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,978 : 318,749.80 = 124,994 : x
  2. Step 2: Convert to fraction form
    230,978/318,749.80 = 124,994/x
  3. Step 3: Cross multiply
    230,978x = 318,749.80 × 124,994
  4. Step 4: Simplify right side
    230,978x = 39,841,812,501.20
  5. Step 5: Solve for x
    x = 39,841,812,501.20/230,978
  6. Step 6: Final answer
    x = 172,491.81

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