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Finding the Fourth Proportional to 142,873.56, 197,165.52 and 79,209.96

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Solution

The fourth proportional to 142,873.56, 197,165.52 and 79,209.96 is: 109,309.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,873.56 : 197,165.52 = 79,209.96 : x
  2. Step 2: Convert to fraction form
    142,873.56/197,165.52 = 79,209.96/x
  3. Step 3: Cross multiply
    142,873.56x = 197,165.52 × 79,209.96
  4. Step 4: Simplify right side
    142,873.56x = 15,617,472,952.58
  5. Step 5: Solve for x
    x = 15,617,472,952.58/142,873.56
  6. Step 6: Final answer
    x = 109,309.75

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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.