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Finding the Fourth Proportional to 153,879.23, 212,449.34 and 99,459.89

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Solution

The fourth proportional to 153,879.23, 212,449.34 and 99,459.89 is: 137,316.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,879.23 : 212,449.34 = 99,459.89 : x
  2. Step 2: Convert to fraction form
    153,879.23/212,449.34 = 99,459.89/x
  3. Step 3: Cross multiply
    153,879.23x = 212,449.34 × 99,459.89
  4. Step 4: Simplify right side
    153,879.23x = 21,130,187,986.97
  5. Step 5: Solve for x
    x = 21,130,187,986.97/153,879.23
  6. Step 6: Final answer
    x = 137,316.70

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