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Finding the Fourth Proportional to 100,265.00, 138,365.87 and 54,935.78

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Solution

The fourth proportional to 100,265.00, 138,365.87 and 54,935.78 is: 75,811.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,265.00 : 138,365.87 = 54,935.78 : x
  2. Step 2: Convert to fraction form
    100,265.00/138,365.87 = 54,935.78/x
  3. Step 3: Cross multiply
    100,265.00x = 138,365.87 × 54,935.78
  4. Step 4: Simplify right side
    100,265.00x = 7,601,236,027.32
  5. Step 5: Solve for x
    x = 7,601,236,027.32/100,265.00
  6. Step 6: Final answer
    x = 75,811.46

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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.