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Finding the Fourth Proportional to 128,372.73, 192,653.73 and 60,905.04

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Solution

The fourth proportional to 128,372.73, 192,653.73 and 60,905.04 is: 91,402.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,372.73 : 192,653.73 = 60,905.04 : x
  2. Step 2: Convert to fraction form
    128,372.73/192,653.73 = 60,905.04/x
  3. Step 3: Cross multiply
    128,372.73x = 192,653.73 × 60,905.04
  4. Step 4: Simplify right side
    128,372.73x = 11,733,583,131.80
  5. Step 5: Solve for x
    x = 11,733,583,131.80/128,372.73
  6. Step 6: Final answer
    x = 91,402.46

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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.