Home / 102,922.10-154,383.15-71,429.30

Finding the Fourth Proportional to 102,922.10, 154,383.15 and 71,429.30

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Solution

The fourth proportional to 102,922.10, 154,383.15 and 71,429.30 is: 107,143.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,922.10 : 154,383.15 = 71,429.30 : x
  2. Step 2: Convert to fraction form
    102,922.10/154,383.15 = 71,429.30/x
  3. Step 3: Cross multiply
    102,922.10x = 154,383.15 × 71,429.30
  4. Step 4: Simplify right side
    102,922.10x = 11,027,480,336.30
  5. Step 5: Solve for x
    x = 11,027,480,336.30/102,922.10
  6. Step 6: Final answer
    x = 107,143.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.