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Finding the Fourth Proportional to 101,109.97, 139,532.51 and 55,789.64

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Solution

The fourth proportional to 101,109.97, 139,532.51 and 55,789.64 is: 76,990.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,109.97 : 139,532.51 = 55,789.64 : x
  2. Step 2: Convert to fraction form
    101,109.97/139,532.51 = 55,789.64/x
  3. Step 3: Cross multiply
    101,109.97x = 139,532.51 × 55,789.64
  4. Step 4: Simplify right side
    101,109.97x = 7,784,467,524.59
  5. Step 5: Solve for x
    x = 7,784,467,524.59/101,109.97
  6. Step 6: Final answer
    x = 76,990.11

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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.