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Finding the Fourth Proportional to 128,667.44, 193,220.40 and 83,765.27

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Solution

The fourth proportional to 128,667.44, 193,220.40 and 83,765.27 is: 125,790.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,667.44 : 193,220.40 = 83,765.27 : x
  2. Step 2: Convert to fraction form
    128,667.44/193,220.40 = 83,765.27/x
  3. Step 3: Cross multiply
    128,667.44x = 193,220.40 × 83,765.27
  4. Step 4: Simplify right side
    128,667.44x = 16,185,158,009.41
  5. Step 5: Solve for x
    x = 16,185,158,009.41/128,667.44
  6. Step 6: Final answer
    x = 125,790.63

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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.