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Finding the Fourth Proportional to 103,652.92, 155,290.69 and 71,996.10

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Solution

The fourth proportional to 103,652.92, 155,290.69 and 71,996.10 is: 107,863.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,652.92 : 155,290.69 = 71,996.10 : x
  2. Step 2: Convert to fraction form
    103,652.92/155,290.69 = 71,996.10/x
  3. Step 3: Cross multiply
    103,652.92x = 155,290.69 × 71,996.10
  4. Step 4: Simplify right side
    103,652.92x = 11,180,324,046.31
  5. Step 5: Solve for x
    x = 11,180,324,046.31/103,652.92
  6. Step 6: Final answer
    x = 107,863.09

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1.5x scale

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.