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Finding the Fourth Proportional to 143,410.48, 197,890.42 and 79,744.48

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Solution

The fourth proportional to 143,410.48, 197,890.42 and 79,744.48 is: 110,038.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,410.48 : 197,890.42 = 79,744.48 : x
  2. Step 2: Convert to fraction form
    143,410.48/197,890.42 = 79,744.48/x
  3. Step 3: Cross multiply
    143,410.48x = 197,890.42 × 79,744.48
  4. Step 4: Simplify right side
    143,410.48x = 15,780,668,639.88
  5. Step 5: Solve for x
    x = 15,780,668,639.88/143,410.48
  6. Step 6: Final answer
    x = 110,038.46

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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.