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Finding the Fourth Proportional to 142,735.57, 196,972.46 and 79,072.00

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Solution

The fourth proportional to 142,735.57, 196,972.46 and 79,072.00 is: 109,117.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,735.57 : 196,972.46 = 79,072.00 : x
  2. Step 2: Convert to fraction form
    142,735.57/196,972.46 = 79,072.00/x
  3. Step 3: Cross multiply
    142,735.57x = 196,972.46 × 79,072.00
  4. Step 4: Simplify right side
    142,735.57x = 15,575,005,765.85
  5. Step 5: Solve for x
    x = 15,575,005,765.85/142,735.57
  6. Step 6: Final answer
    x = 109,117.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.