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Finding the Fourth Proportional to 100,348.01, 138,484.46 and 55,027.73

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Solution

The fourth proportional to 100,348.01, 138,484.46 and 55,027.73 is: 75,940.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,348.01 : 138,484.46 = 55,027.73 : x
  2. Step 2: Convert to fraction form
    100,348.01/138,484.46 = 55,027.73/x
  3. Step 3: Cross multiply
    100,348.01x = 138,484.46 × 55,027.73
  4. Step 4: Simplify right side
    100,348.01x = 7,620,485,545.15
  5. Step 5: Solve for x
    x = 7,620,485,545.15/100,348.01
  6. Step 6: Final answer
    x = 75,940.58

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1.5x scale

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.