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Finding the Fourth Proportional to 111,880.50, 167,821.20 and 45,321.89

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Solution

The fourth proportional to 111,880.50, 167,821.20 and 45,321.89 is: 67,983.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,880.50 : 167,821.20 = 45,321.89 : x
  2. Step 2: Convert to fraction form
    111,880.50/167,821.20 = 45,321.89/x
  3. Step 3: Cross multiply
    111,880.50x = 167,821.20 × 45,321.89
  4. Step 4: Simplify right side
    111,880.50x = 7,605,972,957.00
  5. Step 5: Solve for x
    x = 7,605,972,957.00/111,880.50
  6. Step 6: Final answer
    x = 67,983.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.