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Finding the Fourth Proportional to 153,623.97, 212,000.21 and 85,641.50

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Solution

The fourth proportional to 153,623.97, 212,000.21 and 85,641.50 is: 118,184.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,623.97 : 212,000.21 = 85,641.50 : x
  2. Step 2: Convert to fraction form
    153,623.97/212,000.21 = 85,641.50/x
  3. Step 3: Cross multiply
    153,623.97x = 212,000.21 × 85,641.50
  4. Step 4: Simplify right side
    153,623.97x = 18,156,015,556.51
  5. Step 5: Solve for x
    x = 18,156,015,556.51/153,623.97
  6. Step 6: Final answer
    x = 118,184.78

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