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Finding the Fourth Proportional to 142,753.20, 197,001 and 79,092

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Solution

The fourth proportional to 142,753.20, 197,001 and 79,092 is: 109,147.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,753.20 : 197,001 = 79,092 : x
  2. Step 2: Convert to fraction form
    142,753.20/197,001 = 79,092/x
  3. Step 3: Cross multiply
    142,753.20x = 197,001 × 79,092
  4. Step 4: Simplify right side
    142,753.20x = 15,581,203,092
  5. Step 5: Solve for x
    x = 15,581,203,092/142,753.20
  6. Step 6: Final answer
    x = 109,147.84

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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.