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Finding the Fourth Proportional to 139,757.67, 192,985.44 and 135,238.59

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Solution

The fourth proportional to 139,757.67, 192,985.44 and 135,238.59 is: 186,745.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,757.67 : 192,985.44 = 135,238.59 : x
  2. Step 2: Convert to fraction form
    139,757.67/192,985.44 = 135,238.59/x
  3. Step 3: Cross multiply
    139,757.67x = 192,985.44 × 135,238.59
  4. Step 4: Simplify right side
    139,757.67x = 26,099,078,796.13
  5. Step 5: Solve for x
    x = 26,099,078,796.13/139,757.67
  6. Step 6: Final answer
    x = 186,745.23

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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.