Home / 142,666.11-196,879.82-79,002.54

Finding the Fourth Proportional to 142,666.11, 196,879.82 and 79,002.54

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Solution

The fourth proportional to 142,666.11, 196,879.82 and 79,002.54 is: 109,023.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,666.11 : 196,879.82 = 79,002.54 : x
  2. Step 2: Convert to fraction form
    142,666.11/196,879.82 = 79,002.54/x
  3. Step 3: Cross multiply
    142,666.11x = 196,879.82 × 79,002.54
  4. Step 4: Simplify right side
    142,666.11x = 15,554,005,459.73
  5. Step 5: Solve for x
    x = 15,554,005,459.73/142,666.11
  6. Step 6: Final answer
    x = 109,023.83

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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.