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Finding the Fourth Proportional to 128,593.89, 192,890.79 and 58,493.25

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Solution

The fourth proportional to 128,593.89, 192,890.79 and 58,493.25 is: 87,739.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,593.89 : 192,890.79 = 58,493.25 : x
  2. Step 2: Convert to fraction form
    128,593.89/192,890.79 = 58,493.25/x
  3. Step 3: Cross multiply
    128,593.89x = 192,890.79 × 58,493.25
  4. Step 4: Simplify right side
    128,593.89x = 11,282,809,202.17
  5. Step 5: Solve for x
    x = 11,282,809,202.17/128,593.89
  6. Step 6: Final answer
    x = 87,739.85

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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.