Home / 143,090.56-197,473.92-79,429.42

Finding the Fourth Proportional to 143,090.56, 197,473.92 and 79,429.42

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Solution

The fourth proportional to 143,090.56, 197,473.92 and 79,429.42 is: 109,617.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,090.56 : 197,473.92 = 79,429.42 : x
  2. Step 2: Convert to fraction form
    143,090.56/197,473.92 = 79,429.42/x
  3. Step 3: Cross multiply
    143,090.56x = 197,473.92 × 79,429.42
  4. Step 4: Simplify right side
    143,090.56x = 15,685,238,930.73
  5. Step 5: Solve for x
    x = 15,685,238,930.73/143,090.56
  6. Step 6: Final answer
    x = 109,617.57

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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.