Home / 128,487.02-192,769.96-57,469.41

Finding the Fourth Proportional to 128,487.02, 192,769.96 and 57,469.41

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Solution

The fourth proportional to 128,487.02, 192,769.96 and 57,469.41 is: 86,221.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,487.02 : 192,769.96 = 57,469.41 : x
  2. Step 2: Convert to fraction form
    128,487.02/192,769.96 = 57,469.41/x
  3. Step 3: Cross multiply
    128,487.02x = 192,769.96 × 57,469.41
  4. Step 4: Simplify right side
    128,487.02x = 11,078,375,866.92
  5. Step 5: Solve for x
    x = 11,078,375,866.92/128,487.02
  6. Step 6: Final answer
    x = 86,221.75

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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.